9186 oxygen scavenger analyzer instrument manual

Catalog Number 621=691=086

9186 Oxygen Scavenger Analyzer

INSTRUMENT MANUAL

03/04 1ed

© Hach Company, 2004. All rights reserved.eac/dp 03/04 1ed

Table of Contents

Section 1 Safety Precautions ....................................................................................................................................... 4Use of Hazard Information............................................................................................................................................... 4Precautionary Labels....................................................................................................................................................... 4

Section 2 Specifications ............................................................................................................................................... 5

Section 3 General Description ..................................................................................................................................... 63.1 Unpacking.................................................................................................................................................................. 63.2 Overview.................................................................................................................................................................... 63.3 Principle of Operation ................................................................................................................................................ 6

Section 4 Installation................................................................................................................................................... 104.1 Environmental Considerations................................................................................................................................. 104.2 General Installation Considerations......................................................................................................................... 104.3 Mounting the Instrument.......................................................................................................................................... 10

4.3.1 Attaching the Conditioning Bottle ................................................................................................................... 104.3.2 Installing the Reference Electrode ................................................................................................................. 124.3.3 Installing the In-line Filter ............................................................................................................................... 134.3.4 Connecting the Measuring Cell to the Transmitter ......................................................................................... 134.3.5 Choosing the Sample Line Location .............................................................................................................. 134.3.6 Connecting the Inlet Tubing............................................................................................................................ 134.3.7 Connecting the Outlet Tubing......................................................................................................................... 13

4.4 Electrical Connections ............................................................................................................................................. 154.4.1 Power Connections ........................................................................................................................................ 154.4.2 Electrostatic Discharge (ESD) Considerations............................................................................................... 164.4.3 Wiring the Instrument for Power..................................................................................................................... 174.4.4 Alarm Connections......................................................................................................................................... 18

4.5 Terminal Strip and Wiring Connections Descriptions .............................................................................................. 214.6 Using the Flow Meter............................................................................................................................................... 22

Section 5 Programming the Instrument .................................................................................................................... 235.1 Programming Overview ........................................................................................................................................... 235.2 Setting the Alarms ................................................................................................................................................... 26

5.2.1 Threshold Alarms........................................................................................................................................... 265.2.2 System Alarms............................................................................................................................................... 26

5.3 Temperature Compensation .................................................................................................................................... 275.3.1 Automatic Temperature Compensation.......................................................................................................... 285.3.2 Manual Temperature Compensation .............................................................................................................. 28

5.4 Programming mA Outputs ....................................................................................................................................... 285.5 Setting Up the Display ............................................................................................................................................. 295.6 Setting the Numeric Password (Code) .................................................................................................................... 305.7 Adjusting the mA Settings ....................................................................................................................................... 305.8 Setting Up the RS485 Outputs ................................................................................................................................ 305.9 Calculating the Average Concentration ................................................................................................................... 315.10 Identifying the Software Version ............................................................................................................................ 315.11 Loading Default Values.......................................................................................................................................... 315.12 Setting the Frequency of the Power Source .......................................................................................................... 325.13 Using the Maintenance Function ........................................................................................................................... 32

Section 6 Calibrating the Sensors ............................................................................................................................. 336.1 Calibrating the Temperature Sensor........................................................................................................................ 33

6.1.1 Temperature Conversion Table ...................................................................................................................... 33

2

Table of Contents

6.4.4 Viewing Calibration History ............................................................................................................................ 366.4.5 Calibration-related Messages ........................................................................................................................ 36

Section 7 Maintenance................................................................................................................................................ 377.1 Scheduled Maintenance .......................................................................................................................................... 37

7.1.1 Refilling the pH Conditioner ........................................................................................................................... 377.1.2 Replacing the Tubing...................................................................................................................................... 377.1.3 Replacing the In-line Filter ............................................................................................................................. 37

7.2 Unscheduled Maintenance ...................................................................................................................................... 377.2.1 Replacing the Fuse ........................................................................................................................................ 377.2.2 Cleaning the Instrument................................................................................................................................. 387.2.3 Cleaning the Measuring Block ....................................................................................................................... 38

Section 8 Modbus Communication............................................................................................................................ 398.1 Introduction.............................................................................................................................................................. 398.2 Modbus Settings...................................................................................................................................................... 39

8.2.1 N .................................................................................................................................................................... 398.2.2 Baud............................................................................................................................................................... 398.2.3 Parity .............................................................................................................................................................. 398.2.4 Stop Bit .......................................................................................................................................................... 398.2.5 Swap Word..................................................................................................................................................... 39

8.3 Modbus Function Codes.......................................................................................................................................... 398.3.1 Read Input Registers—Function Code 03 ..................................................................................................... 40

8.4 Write Input Register—Function Code 06................................................................................................................. 408.4.1 Write Multiple Input Registers—Function Code 16 (10 Hex) ......................................................................... 418.5.2 Units Definition............................................................................................................................................... 45

8.6 Network Connections .............................................................................................................................................. 468.6.1 RS485 Connections ....................................................................................................................................... 468.6.2 Terminator ...................................................................................................................................................... 46

Section 9 Troubleshooting.......................................................................................................................................... 479.1 Troubleshooting Error Messages............................................................................................................................. 479.2 Detecting Electrical Faults ....................................................................................................................................... 48

Section 10 Parts and Accessories ............................................................................................................................. 49

Section 11 How to Order ............................................................................................................................................. 50

Section 12 Repair Service........................................................................................................................................... 51

Section 13 Warranty .................................................................................................................................................... 52

3

4

Section 1 Safety Precautions

Please read this entire manual before unpacking, setting up, or operating this instrument.

Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.

Do not use or install this equipment in any manner other than that which is specified in this manual.

Use of Hazard InformationIf multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the greatest hazard.

DANGERIndicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.

CAUTIONIndicates a potentially hazardous situation that may result in minor or moderate injury.

Note: Information that requires special emphasis.

Precautionary LabelsRead all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed.

This symbol, if noted on the instrument, references the instruction manual for operation and/or safety information.

This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and/or electrocution exists and indicates that only individuals qualified to work with hazardous voltages should open the enclosure or remove the barrier.

This symbol, when noted on the product, identifies the location of a fuse or current limiting device.

This symbol, when noted on the product, indicates that the marked item can be hot and should not be touched without care.

This symbol, when noted on the product, indicates the presence of devices sensitive to Electro-static Discharge and indicates that care must be taken to prevent damage to them.

This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only individuals qualified and trained to work with chemicals should handle chemicals or perform maintenance on chemical delivery systems associated with the equipment.

This symbol, if noted on the product, indicates the need for protective eye wear.

This symbol, when noted on the product, identifies the location of the connection for Protective Earth (ground).

5

Section 2 Specifications

Specifications are subject to change without notice.

General

Controller Dimensions 14.4 cm x 14.4 cm x 11.9 cm (5.6 in. x 5.6 in. x 4.6 in.) (W x H x D)

Mounting Pre-mounted on panel

Instrument Shipping Weight 4.1 kg (9 lb)

Sample Requirements

Sample Flow Rate to Analyzer 166 to 250 mL/min (10 to 15 L/h) recommended

Inlet Pressure to Instrument 0.5–6 bar (7–89 psi)

Sample Temperature Range 5–45 °C (41–113 °F)

Sample Inlet Tubing: at instrument ¼ in. OD

Drain Fitting 5/16 in. OD

Application Sample Industrial and boiler waters

Electrical

Power Requirements 100–240 V ac ±10%; 90 VA, 50/60 Hz, 2 Amp fuse

Power ConnectionConnection made to a three-position terminal block through one of four ½-inch conduit holes in the case. Wire size: 12–18 AWG.

Installation Category II

Alarm Contact Rating

Four relays (SPST) each rated at 3 A (resistive), 240 V ac maximum. The contacts are unpowered.

Use either high voltage (greater than 30 V RMS and 42.2 V PEAK or 60 V dc) or low voltage (less than 30 V RMS and 42.2 V PEAK or 60 V dc). Do not use a combination of high and low voltage.

Alarm ConnectionConnection made by four removable two-position terminals through one of four ½-inch conduit holes in the case. Wire size: 12–18 AWG.

Analog Output Two isolated outputs, 0/4–20 mA. Maximum impedance 800 ohm.

Recorder Output Connections Connection made to a terminal block through one of four ½-inch conduit holes in the case. Wire size: 12–18 AWG.

Digital Output RS485

Performance

Measurement Range 0–500 ppb dissolved N2H4, 0–100 ppb dissolved carbohydrazide

Repeatability ± 2% of measurement or 1 ppb, whichever is greater

Detection Limit Drift is negligible; detection limit is 1ppb

Response Time @ 90% < 60 seconds

CalibrationElectrical zero, set automatically or chemical zero with hydrazine-free water. Calibration of the slope compared with a laboratory instrument.

Analog Outputs Two 4–20 mA/0–20 mA, linear or bilinear

Environmental

Enclosure IP65/NEMA 4x

Storage Temperature Range –20 to 60 °C (–4 to 140 °F)

Operating Temperature Range 5–45 °C (41–113 °F)

Relative Humidity 10 to 90% non-condensing

Compliance

UL listed (E226594) to UL3101-1& CSA C22.2 No. 1010.1

Section 3 General Description

3.1 UnpackingRemove the analyzer from its shipping carton and inspect it for any damage. If damage is evident or the shipment is incomplete, please contact the Customer Service Department, Hach Company, Loveland, Colorado for instructions. The toll-free number is 800-227-4224.

3.2 OverviewThe 9186 Oxygen Scavenger Analyzer (Figure 1 and Figure 2) is an on-line, single-channel industrial analyzer that measures hydrazine or carbohydrazide in boilers and other applications that require monitoring of oxygen scavengers at the ppb and ppm levels.

This instrument uses a 3-electrode amperometric method to measure concentration.

3.3 Principle of OperationThe 9186 Analyzer continuously measures the amount of oxygen scavengers, dissolved hydrazine, and carbohydrazide in water. The measuring principle is based on the electrochemical method of 3-electrode amperometry.

A polarization voltage (+480 mV) is applied between a platinum anode (working electrode) and a stainless steel cathode (counter-electrode). The oxygen scavenger is oxidized at the surface of the working electrode and the resulting current is directly proportional to the oxygen scavenger concentration in the range of 0 to 500 ppb N2H4 (Figure 3).

The reaction is enhanced in an alkaline environment, the sample is conditioned before it enters the measuring cell. The sample is conditioned to pH ≥ 10.2 by adding diethylamine, monoethylamine, ammonia, or diisopropylamine through a Venturi tube. A sensor integrated to the measuring cell provides temperature compensation.

The chemical reaction is as follows:

The anode-cathode potential is kept constant with respect to a third electrode (reference electrode, Ag/AgCl). This avoids interference effects resulting from variations in water composition that appear when using the 2-electrode system.

At 480 mV, the cell current is linearly proportional to the hydrazine concentration (Figure 4).

N2H4 4OH–

+ N2 4H2O 4e–

+ +→

6

General Description

Figure 1 Front View

1. Analyzer (panel) 6. Flow Meter (Cat. No. 694=000=001)

2. Transmitter 7. Measuring Cell (Cat. No. 09186=C=0100)

3. Reference Electrode (Cat. No. 368429,00000) 8. Venturi Block (Cat. No. 09186=C=0110)

4. Counter Electrode 9. J-shaped piece of Tubing (Cat. No. 09186=A=0200)

5. Working Cell (Cat. No. 09186=A=0300) and Temperature Electrode

10. Conditioning Bottle

23.2 °C

Display 22

Menu

ClO

ppm

0.065

5

10

15

l/hWATER

M

9100R

Esc Enter

on offzero

min

1

2

3

4

5

6

10

9

8

7

7

General Description

Figure 2 Back View

1. Analyzer (panel) 6. Flow Regulator

2. Transmitter 7. Sample Inlet Connection

3. AC Power Cord 8. Drain Connection (Cat. No. 510100,01610) (must be a gravity drain)

4. Sample line from flow controller to measuring cell 9. Flow Meter

5. In-Line Filter (Cat. No. 363877,06000)

23.2 °C

Display 22

Menu

ClO

ppm

0.065

9100R

EscHach Company5600 Lindberg DriveP.O. Box 389Loveland, CO 80539U.S.A.

R

Type:Model:Serial No.:

Made in the E.E.C.

ETL LISTEDUL STD 1262H0492805390CERTIFIEDCSA STD C22.2 NO.142

1

2

3

5

4

6

7

9

8

8

General Description

Figure 3 Hydrazine Potential Intensity Curve

Figure 4 Current vs. Hydrazine Concentration

0

–20

20

40

60

80

100

120

140

160

180

200

220

360 ppb180 ppb 270 ppb90 ppb0 ppb

0.00

0 20 40 60

ppb O2Red

80 100 120 140 160 180 200

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

9

Section 4 Installation

DANGERThis instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical and plumbing codes.

4.1 Environmental ConsiderationsThe instrument controller is designed for IP65, indoor/outdoor installation with an ambient temperature between 5 to 45 °C (41 to 113 °F). Do not mount the instrument in direct sunlight; shield from dripping water.

4.2 General Installation ConsiderationsImportant Note: The gravity drain forces the fumes from the conditioning solution into the air. Failure to provide a gravity drain can create a health hazard.

• Place the analyzer in an accessible location.

• Make the sample supply line as short as possible.

• Ensure that there is no air intrusion into the sample supply line.

• There must be a gravity drain.

4.3 Mounting the Instrument

DANGERThis analyzer is intended to be used for water samples only.

Dimensions are given in millimeters and inches (see Figure 5 on page 11).

4.3.1 Attaching the Conditioning Bottle

CAUTIONTo familiarize yourself with handling precautions, dangers and emergency procedures, always review the Material Safety Data Sheets prior to handling containers, reservoirs, and delivery systems that contain chemical reagents and standards. Protective eye wear is always recommended when contact with chemicals is possible.

1. Fill the Conditioning bottle with diisopropylamine (Cat. No. 2834453).

Note: The bottle that the DIPA comes in can be directly connected to the diffuser cap, therefore decanting may not be necessary.

2. Insert the diffuser tube into the bottle and screw the bottle cap onto the bottle.

3. Place the Conditioning bottle into the basket as shown in Figure 8 on page 14.

4. Connect one end of the J-shaped ¼ in. tubing to the bottle cap. Connect the other end to the Measuring Cell as shown in Figure 8 on page 14.

Note: Prior to adding conditioner, it is important to ensure a gravity drain is installed to prevent back pressure that would cause the creation of amine fumes in the area.

Note: The reagent will last for 1–3 months. Make sure that the reagent (Monoethylamine, diethylamine, or ammonia) levels remain above the indicator line shown on the mounting panel. Other amines require periodic pH check to determine if 10.2 or higher is maintained.

10

Installation

Figure 5 Panel Dimensions

23.2 °C

Display 22

Menu

ClO

ppm

0.065

5

10

15

l/hWATER

M

9100R

Esc Enter

on offzero

min

787.

0 m

m (

30.9

8 in

ches

)

270.0 mm(10.62 inches)

8.89 mm thru( 0.35 inches)4 holes

15.0 mm(0.60 inches)

Typical

228.0 mm (8.97 inches)

117.0 mm (4.60 inches)

3.17 mm (0.125 inches)reference only

15.0 mm (0.60 inches)Typical

300.0 mm(11.81 inches)

817.

1 m

m (

32.1

7 in

ches

)

11

Installation

4.3.2 Installing the Reference Electrode

1. Place the seven small white Teflon®* beads through the hole at the top of the measuring cell as shown in Figure 6. The beads provide better mixing and self-cleaning.

2. Remove the reference electrode from its packaging.

3. Remove the red cap from the electrode.

4. Connect the male end of the electrode to the female end of the red connector on the measuring cell.

5. Pull the electrode from the electrode storage bottle.

6. Screw the electrode into the hole at the top of the measuring cell.

Note: Replace the reference electrode yearly. See Section 7 on page 37.

Figure 6 Installing the Teflon Beads

*Teflon is a registered trademark of Dupont Corporation.

1. Reference Electrode (Cat. No. 368429,00000) 3. Teflon Beads (Cat. No. 588801,75008)

2. Reference Electrode Connector (Cat. No. 09186=A=0500) 4. Measuring Cell (Cat. No. 09186=A=0100)

3

4

1

2

12

Installation

4.3.3 Installing the In-line Filter

Note: Rinse out sample system before startup to prevent “crud bursts” from clogging new filters.

1. On the back of the panel, connect ¼ in. tubing to the elbow fitting on the top of the measuring cell (see Figure 8).

2. Connect the other end of the tubing to one end of the filter. Make sure that the filter is oriented with the arrow pointing up.

3. Connect another length of ¼ in. tubing to the bottom of the filter. Connect the other end of the tubing to the elbow fitting on the right side of the pressure regulator.

4.3.4 Connecting the Measuring Cell to the TransmitterInsert the female end of the sensor connector into the 4-pronged connector at the bottom of the measuring cell.

4.3.5 Choosing the Sample Line Location

Note: Erratic readings will occur if a sample is drawn from a location that is too close to points of chemical additions to the process stream, if mixing is inadequate, or if the chemical reaction is incomplete.

Selecting a good, representative sampling point is important for optimum performance of your instrument. The sample analyzed must be representative of the condition of the entire system.

Install sample line taps into the side of larger process pipes to minimize the chance of ingesting sediment from the pipe line bottom or air bubbles from the top. A tap projecting into the horizontal center of the pipe is ideal.

Figure 7 Sample Line Location

4.3.6 Connecting the Inlet Tubing

1. Choose the sample line location as described above.

2. Connect the ¼ in. O.D. tubing to the lower left elbow fitting on the Pressure Regulator as shown in Figure 8.

4.3.7 Connecting the Outlet TubingOn the back of the panel, connect the 3/8-inch outlet tubing to the barbed fitting on the back of the measuring cell. The tubing must not exceed 4 ft and it must drain straight down.

Poor

Sediment (Typical)

Air (Typical)

Poor Good Best

13

Installation

Figure 8 Connecting the Outlet Tubing

1. Analyzer (panel) 9. Venturi Block

2. Transmitter 10. J-shaped tubing

3. Reference Electrode 11. Bottle Cap with diffuser

4. Counter Electrode 12. Conditioning Bottle in the basket

5. Working Cell and Temperature Electrode 13. In-Line Filter

6. Sensor Connector (to transmitter) 14. Pressure Regulator

7. Flow Meter 15. Barbed Fitting for 3/8-inch atmospheric drain tubing

8. Measuring Cell 16. Flow Meter

23.2 °C

Display 22

Menu

ClO

ppm

0.065

5

10

15

l/hWATER

M

9100R

Esc Enter

on offzero

min

23.2 °C

Display 22

Menu

ClO

ppm

0.065

9100R

EscHach Company5600 Lindberg DriveP.O. Box 389Loveland, CO 80539U.S.A.

R

Type:Model:Serial No.:

Made in the E.E.C.

ETL LISTEDUL STD 1262H0492805390CERTIFIEDCSA STD C22.2 NO.142

1

2

3

4

5

6

7

11

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14 16

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Installation

4.4 Electrical ConnectionsDANGERA qualified technician should make all electrical connections to ensure compliance to all applicable electrical codes. If permanent connection (conduit) is required to meet UL, CSA and other applicable instrument safety standards, an external power disconnect switch must be installed. This power disconnect switch should be located near the instrument.

4.4.1 Power ConnectionsThe product enclosure is rated IP65; however, achieving this protection level depends on the use of proper hardware in the installation of this product. NEMA-approved conduit hardware is recommended. Select the style of conduit hardware that will seal to the enclosure wall when using flexible or rigid conduit. Remember to follow all local electrical codes for your area.

Note: Power feeds (ac) to the instrument which are not contained in properly grounded metal conduit can be a source of instrumentation upset or failure if surge or transient disturbance levels exceed those levels specified for industrial type products.

For process or industrial applications, the national electrical codes of most countries require that ac service needs be hard-wired and contained in conduit systems. This instrument has been designed to conform to this requirement. Hach Company recommends conduit for two reasons:

1. It is generally required by most local electrical codes.

2. Use of metal conduit can improve immunity to lightning surges and ac power transients.

Note: If power cords are allowed by local electrical code, a 125V UL/CSA approved power cord with an approved NEMA-style strain relief and a standard 115V North American-style plug (Hach Cat. No. 46306-00) or a 230V VDE-approved power cord with an approved NEMA-style strain relief and a Continental European-style plug (Hach Cat. No. 46308-00) can be ordered.

Electrical and instrumentation standards require a local means of removing power from the product. Since this instrument does not have an on/off switch, the customer must provide one. This may be accomplished with a customer-supplied power cord or switch box (see Figure 9 and Figure 10). A power cord method is only acceptable if local codes permit and the considerations outlined in this section are addressed.

In hard-wired electrical applications the power and safety ground service drops should be no longer than 6 meters (20 feet) unless metal conduit is used to shield the ac power wiring. The wire should be no smaller than 14 gauge.

In applications where power cords are allowed and power surges and transients are not a great concern, an 18 gauge, 3-conductor power cord (including a safety ground wire) can be used, but its length must not exceed 3 meters (10 feet).

Power connections are made at the terminal strip that is accessible when the front cover and internal shielding are removed. Use only provided cord connected strain reliefs to ensure sealing and protection against dust and moisture. Use NEMA sealing hardware as appropriate (see Figure 11).

A power source with 100–240 V ac ± 10% is acceptable for this instrument. The power supply terminal strip can be removed from its housing for connections. For best results, electrical connections must always remain dry and clean in order to ensure reliable instrument operation. Ensure that the cables are positioned correctly when opening the transmitter.

15

Installation

Figure 9 Connecting ac Power with Customer-supplied Power Cord

Figure 10 Connecting ac Power with Customer-supplied Switch Box

4.4.2 Electrostatic Discharge (ESD) Considerations

Important Note: The analyzer circuit board components are EXTREMELY sensitive to static electricity damage in a powered or unpowered state. Do not touch circuit boards or its components without wearing a grounded wrist strap.

Delicate internal electronic components can be damaged by static electricity, resulting in degraded instrument performance or eventual failure. Take the following steps to prevent ESD damage to the instrument:

• Before touching any instrument electronic components (such as printed circuit cards and the components on them) discharge static electricity from your body. This can be accomplished by touching an earth-grounded metal surface such as the chassis of an instrument, or a metal conduit or pipe.

1. Power Terminal 2. Power Cord Strain Relief

1. Power Terminal 2. Conduit Strain Relief

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D

Wiring located behind the guide plate shall berated at 80 C (176 F) or higher.

Vac : 100 - 240 V

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

1

2

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

1

2

16

Installation

• To reduce static build-up, avoid excessive movement. Transport static-sensitive components in anti-static containers or packaging.

• To discharge static electricity from your body and keep it discharged, wear a wrist strap connected by a wire to earth ground.

• Handle all static-sensitive components in a static-safe area. Use anti-static floor pads and work bench pads.

4.4.3 Wiring the Instrument for PowerUse a 3-wire, single-phase power supply with an appropriate cross-section for the required power. Connect to the instrument power terminal as follows:

DANGERThis instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical codes.

1. Remotely disconnect instrument power before opening the analyzer door.

2. Remove the four screws from the front cover. Open the cover. Remove the internal shielding plate (4.4.3).

3. Strip the outside insulation of each wire back ¼-inch (Figure 12).

4. Route the wires or approved power cord through the back right conduit opening. Use the provided cord-connected strain reliefs to ensure adequate sealing. Use appropriate NEMA sealing hardware (4.4.3 on page 17).

5. Using the connection diagram on the shield plate, insert the wire ends into the mains connector until the insulation seats against the connector (Figure 12).

6. Tighten the connectors using a small flat-head screwdriver. Firmly tug each wire to ensure solid connections.

7. Reinstall the shielding plate and front cover if all of the wiring is complete.

Figure 11 Using the Optional Strain Relief and Conduit Hole Sealing Plug

1. Power cord strain relief 2. Conduit strain relief 3. Conduit hole sealing plug

2 3

17

Installation

Figure 12 Removing the Shielding Plate

Figure 13 Proper Wire Preparation and Insertion

4.4.4 Alarm Connections

DANGERThe relay connection area is designed for only high voltage (100–240 V ac) connections. A shock hazard can exist if low voltage (<30V) connections are simultaneously made in the relay connection area.

The product enclosure is IP65; however, achieving this protection level depends on the use of proper hardware during installation. Use standard off-the-shelf NEMA-approved conduit hardware. Take care to select the style of conduit hardware that will seal to the enclosure wall when using flexible or rigid conduit.

The analyzer contains four unpowered alarm relays (3 A resistive, 100–230 V ac) designed for use with high voltage (greater than 30V-RMS). The Normally Open and Common relay contacts are connected when an alarm condition is active. The relay connector accepts 18–12 AWG wire. Determine wire gauge based on load application. Less than 18 AWG is not recommended.

Note: Current to the relay contacts must be limited to 3 amps resistive. Local removal of power from the relays must be available in case of emergency or for servicing the product. If the relay contacts are supplied with greater than 30 Volts, power removal can be made with an external switch and a 3-amp fuse or with a switched 3-amp circuit breaker.

1. Remotely disconnect all instrument power before opening the analyzer door.

2. Strip the insulation on each wire back ¼-inch.

3. Remove the front cover. Remove the shielding plate inside the instrument.

4. Route the wire through the back right conduit opening. Use the provided cord-connected strain reliefs. Use appropriate NEMA sealing hardware.

5. Insert the wire ends into the connector until the insulation seats against the connector. Refer to Figure 14 and Table 1 on page 21.

1. Shielding Plate 3. Ground stud (pulls the shield out of the instrument)

2. Thumbscrew (loosen to remove shield)

1. Strip ¼-inch of insulation. 2. Seat insulation against connector with no bare wire exposed.

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

Serial N°:

50/60Hz 25VAVac: 100 – 240

+

-+

-

S1

S2

S3/Sys.Alarm

S4/Timer

Mai

ns

PE

NL

F1

T 2A L

250V

Caution: For continued protectionagainst risk of fire, replace onlywith same type and rating fuse.

Ana

log

Out

puts

Ser

ial c

om.

(opt

ion)

Rel

ays

Am

p.m

odul

eP

ream

p.S

uppl

y

I1

I2

RX/TX +

Temp +

RX/TX –Shield

Temp –Ref.CounterWork

GND

AuxGND

+ VGND– V

Amperometry 9180

under shielding plate

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

3

2

1

1

PE

Mains

NL

2

18

Installation

Note: Primary components may become hot under high line voltage and ambient temperature conditions. ac wiring insulation must be rated a minimum of 95 °C.

6. Tighten the connectors using a small flat-head screwdriver. Firmly tug on each wire to ensure solid connections.


8. See section 5.2 on page 26 for information on setting alarms.

Figure 14 Relays Terminal Strip

4.4.5 Analog and RS485 Output ConnectionsThis transmitter is designed for either a 4–20 or 0–20 mA output with a maximum 800 ohm load. Make output connections with twisted-pair shielded wire. Connect the shield at the recorder or controlled component end only. On the opposite end, remove the shield and insulate the remaining wires.

Note: The RS485 card is factory installed, it does not need to be re-installed.

1. Remotely disconnect all instrument power before opening the analyzer door.

2. Remove the front cover.

3. Strip the insulation on the outer jacket back 7 inches. Remove the conductors from the shield.

4. Cut the shield to 1 inch. Connect it to the ground on the shielding plate.

Note: Use a twisted-pair, shielded cable. Use of non-shielded cable may result in radio frequency emission or susceptibility levels higher than allowed.

5. Strip the insulation on the remaining wires back ¼-inch.

6. Route the wire through the front left conduit opening. Use the provided cord-connected strain reliefs to ensure adequate sealing. Use appropriate NEMA sealing hardware.

7. Insert the wire ends into the Analog or RS485 connector until the insulation seats against the connector. Refer to 4.5 and Table 1 on page 21.

8. Tighten the connectors using a small flat-head screwdriver. Firmly tug on each wire to assure solid connections.


IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

Relays (S1– S4)

S1

S2

S3/Sys. Alarm

S4/Timer

19

Installation

Figure 15 Analog and RS485 Terminal Strips

4.4.6 Sensor ConnectionsTo reattach the sensor cable:

1. Remotely disconnect all instrument power before opening the analyzer door. Remove the front cover.

2. Route the probe cable through the front right conduit opening. Use the provided cord-connected strain reliefs to ensure adequate sealing. Use appropriate NEMA sealing hardware.

3. Insert the wire ends into the “amp module” connector until the insulation seats against the connector. Refer to Figure 16 and Table 1 on page 21.

4. Tighten the connectors using a small flat-head screwdriver. Firmly tug on each wire to assure solid connections.

5. Reinstall the shielding plate and front cover if all of the wiring is complete

1. RS485 Circuit Card 3. Analog Connections

2. Headers for mounting RS485 Circuit Card 4. K9–Shield Connections

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

1 2 3

20

Installation

Figure 16 Sensor Terminal Strip

4.5 Terminal Strip and Wiring Connections Descriptions

1. Amp. module Connector 2. Shield Connections 3. Ground Stud

Table 1 Terminal Strip and Wiring Descriptions

Terminal Strip Description Wiring

Analog Outputs

RS485RX/TX [+] user

RX/TX [–] user

#10–20 mA or 4–20 mA [+] user0–20 mA or 4–20 mA [–] user

#20–20 mA or 4–20 mA [–] user

0–20 mA or 4–20 mA [+] userAmperometric Module (Measuring Board)

Temperature Sensor [+] black (18 AWG) temp [+]

Temperature Sensor [–] blue (18 AWG) temp [–]

Reference when using the 3 electrodes Transparent wire refCounter-electrode (anode) grey (18 AWG) counter

Working electrode (cathode) white (18 AWG) work

pH Auxiliary input Not used auxExternal shield–long white cable white (16 AWG) shielding plate

Internal Shielding

White–18 AWG GNDac Power Supply

Main power supply. 100–240 V ac 50/60 Hz

Green/Green-yellow GND (PE)White/Blue neutral (N)

Black/Brown hot (L)

RelaysAlarm 1. Simple contact user

Alarm 2. Simple contact user

Alarm 3 or system alarm. Simple contact. userAlarm 4 or timer. Simple contact. user

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

Serial N°:

50/60Hz 25VAVac: 100 – 240

+

-+

-

S1

S2

S3/Sys.Alarm

S4/Timer

Mai

ns

PE

NL

F1

T 2A L

250V

Caution: For continued protectionagainst risk of fire, replace onlywith same type and rating fuse.

Ana

log

Out

puts

Ser

ial c

om.

(opt

ion)

Rel

ays

Am

p.m

odul

eP

ream

p.S

uppl

y

I1

I2

RX/TX +

Temp +

RX/TX –Shield

Temp –Ref.CounterWork

GND

AuxGND

+ VGND– V

Amperometry 9180

under shielding plate

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

1

2 3

21

Installation

Figure 17 Terminal Strip And Circuit Board Descriptions

4.6 Using the Flow MeterWhen all plumbing and electrical connections are made, slowly open the supply valve to the inlet tube. Rotate the dial marked M to adjust the flow rate through the analyzer. The flow rate MUST be stable, and between 10-15 L/hr. Fluctuations in the flow rate will cause fluctuations in the reading on the display.

4.7 Powering On the AnalyzerConfirm that the site voltage corresponds to that stated on the instrument identification plate. Turn on power to the transmitter. The transmitter performs a self-test and displays an initial value.

1. K5- Not used with Hydrazine 5. K9-Internal Shield Connections

2. J1- Working Cell and Counter Electrode Connections 6. Fuse Holder (F1, T, 2A, L, 250V)

3. Analog Outputs 7. S1-S4 (relays, alarm and timer connections)

4. P1 (contrast adjustment) 8. ac Power Connections

IC1

J1

D3

D4

RE

4

RE3

D2

RE

2

RE1V1

V2

V3

V4

D1

C8

L2

C6

Z6

Model : 09125-A-2000Serial No : 0104 549

Ind : D


Vac : 100 - 240 V

K2

K9

K4

K5

IC2

J1

RP1Ic4

K6RP2

Ref

Temp +

Temp –

Counter

Work

Aux

9180AMPV1.03

P1

2

1

4 5 6

3 7

8

22

Section 5 Programming the Instrument

5.1 Programming Overview

Figure 18 9186 Display and Keypad

On initial startup the instrument will display the Main Screen (see Figure 18).

Note: If a key is not pressed after 10 minutes, the transmitter returns to the main display.

• In the Main Screen, use the LEFT ARROW key to view one of the Display 2-4 Menus.

• Display 2 can be programmed to show sample concentration, sample temperature, and diffusion current.

• Display 3 shows the status of programmed alarms.

• Display 4 shows a bar graph of the current analog outputs.

• In the Main Screen, use the RIGHT ARROW key to view the Menu screen.

• In the Menu screen, use the LEFT ARROW to navigate through the menu selections (programming, calibration, maintenance, and service) and press ENTER to view. Press ESC to go back to the previous screen. Press the LEFT ARROW key to scroll through the menu. See Table 2 for a list of programming options for each menu selection.

• Use the RIGHT ARROW key to scroll through the list of possible values.

• To change a numeric value, select the value with the LEFT ARROW key. Press the RIGHT ARROW key to highlight and change the leftmost digit. Press ENTER to accept the change and move to the next digit to the right.

1. ESC Cancels an operation or returns to the next level up.

2. LEFT ARROW Validates a selection and passes on to the next step.

3. RIGHT ARROW Takes the action as indicated above the key. The action changes depending on the display and menu.

4. ENTER Validates the selection indicated above the key. The action changes depending on the display and menu.

23

Programming the Instrument

• Use the RIGHT ARROW key to change additional digits as needed. Press ENTER as many times as needed to accept the value.

Table 2 Display 2 Menu

Function Displays Values

PROGRAMING

MEASURE TEMP. COMP.

SENSORNTC

AD590

TYPEAuto

Manual

ALARMS ALARMS 1–4

AFFECT:

Conc

°C

No

LIM: (Set value)

DIR:Down

Up

DELAY: (Set value)

HYST: (Set value)

RELAY:NO

NC

mA OUTPUTS

OUTPUT 1 & 2

AFFECT:

Conc

mA

°C

TYPE:4–20

0–20

MODE:Lin

Dual

LOW: (Set value)

UP: (Set value)

SPECIAL PROGRAM

MAINTENANCE MODE:

Last

Present

Live

CALIBRATION MODE:

Last

Present

Live

SYSTEM ALARM MODE:

Last

Present

Live

TIMER MODE

Last

Present

Live

TEST VALUE (Set value)

24


PROGRAMMING RS485

N: — (Set value)

BAUD: — (Set value)

PARITY

— No

— ODD

— EVEN

STOP BIT: — (Set value)

CALIBRATION

CONC. CALIB.ZERO

PROGRAMMINGElecAuto

Chemical

EXECUTION

SLOPE EXECUTION

TEMP. CALIB. EXECUTION —

PARAMETERS DISPLAYS PARAMETERS —

HISTORIC DISPLAYS HISTORIC VALUES —

MAINTENANCE Enter password if necessary

SERVICE AVERAGEAVERAGE (Set value)

TEST

SERVICE

DISPLAY

CONC:ppb/ppm

µg–mg/L

TEMP:°C

°F

LANGUAGE:

GB

D

Sp

I

F

CODE

CALIB: (Set value)

PROG: (Set value)

SERVICE: (Set value)

SOFT ISSUE

DEFAULT VAL. YES

ADJUST mAOUPUT 1 VALUE: (Set value)

OUTPUT 2 VALUE: (set value)

CONFIGURATION FREQ: (Set value)

POLYMETRON CODE: (Set value)

Table 2 Display 2 Menu (continued)

Function Displays Values

25


5.2 Setting the AlarmsRelays S1 and S2 may be assigned as threshold alarms. Relay S3 can be assigned as a threshold system alarm. Relay S4 can be assigned as a threshold alarm or relay timer.

1. From the Main screen, press the RIGHT ARROW key.

2. Use the LEFT ARROW key to highlight PROGRAMMING. Press ENTER.

3. Use the LEFT ARROW key to highlight ALARMS. Press ENTER.

4. Use the LEFT ARROW key to highlight an alarm. Press ENTER.

5. Set the alarm parameters using Table 3 and Table 4.

5.2.1 Threshold AlarmsThe alarm relays are activated if the measured value matches the programmed limit and meets the high or low alarm condition.

5.2.2 System AlarmsThe S3 relay can be used to indicate a malfunction detected by the analyzer. We recommend connecting the S3 relay to an external alarm device to warn the operator of an alarm condition.

When an alarm occurs, the S3 relay is activated. In the event of manual acknowledgment to the external alarm device, the relay remains activated even if the fault is resolved. Press ENTER to deactivate the relay and accompanying error message. In the event of automatic acknowledgement, the relay and message are deactivated once the alarm trigger disappears.

Table 3 Threshold Alarms

AFFECT Conc. No °C/°F Used to select a temperature or concentration threshold. Select No when the relay is not used.

LIM xxxx Used for entering the setpoint value.

DIRECTION Up/Down Select the up or down direction (high or low alarm).

DELAY xxxs Time delay in seconds prior to relay triggering

HYST. XX%Definition of threshold hysteresis in % (max. 10%). Hysteresis only functions on the set point. It is located below the set point for the upper alarm and above the set point for the lower alarm.

RELAYS NO/NC Relay normally open (NO) or normally closed (NC).

Table 4 Alarm 3 (System Alarm)

MODE No Threshold System Choose a threshold function or a system alarm function.

ACCEPT Auto/Manual Choose manual (ENTER key) or automatic alarm acknowledgement.

RELAYS NO/NC Select normally open or normally closed.

26


5.2.3 Setting the TimerThe S4 relay can be used for cyclical operation. The operating cycle is defined using Table 5 and Figure 19.

Figure 19 Timer Operating Cycle

Note: When using S4 relay as a Timer, a countdown is displayed for the start of the relay execution cycle. It is expressed in hours: minutes, with the exception of the last ten minutes, where it is expressed in hours: minutes: seconds.

5.3 Temperature Compensation

Table 5 Alarm 4 (TImer)

MODE No Limit Timer Choose between a threshold function (see Table 3) or a timer function.

INTERV XXXXmn Set the time interval between two active cycles (minutes).

Nb IMPUL. X Define the number of impulses during the active cycle.

Ton XXXs Set the activation time (seconds) for each impulse.

Toff XXXs Set the deactivation time (seconds) for each impulse.

TmA XXmn Set the holding time for analog outputs at the end of each cycle.

S4 relayNumber of impulses (5)

Closed

Open

Ton (5 s)Toff (3 s) T mA (5 min)

Interval (1440 min)

Time

Table 6 Temperature Compensation

Sensor NTC AD590 Type of temperature sensor. The NTC (default value) is pre-programmed.

TYPE Auto/ManualSelect a temperature measurement with automatic or manual compensation. If you select manual temperature compensation, the TEMP. CONTROL menu is no longer available.

TEMP. xx.x °C Used for entering the sample temperature during manual compensation.

27


5.3.1 Automatic Temperature CompensationThe sensor continuously measures the sample temperature. Concentration values are automatically converted to a reference temperature of 25 °C. To set Automatic Temperature Compensation:



3. Use the LEFT ARROW key to highlight MEASURE. Press ENTER.

4. Press ENTER to select TEMP. COMP.

5. In the TYPE field, select Auto with the RIGHT ARROW key.

6. Press ESC to exit.

5.3.2 Manual Temperature Compensation

1. From the Main display, press the RIGHT ARROW key.


3. Use the LEFT ARROW key to highlight MEASURE. Press ENTER.

4. Press ENTER to select TEMP. COMP.

5. In the TYPE field, select MANUAL with the RIGHT ARROW key.

6. Enter the sample temperature. Press ESC when finished. Press ENTER until the next menu option is highlighted.

5.4 Programming mA OutputsThe signals generated by the analog outputs allow measurement data to be transmitted to any external control or recording device.



3. Use the LEFT ARROW key to highlight mA OUTPUTS. Press ENTER.

4. Use the LEFT ARROW key to highlight OUTPUT 1, OUTPUT 2, SPECIAL PROG, or TEST.

5. Program the parameters using Table 7.

28


Figure 20 Linear and Bi-linear Output Loops

5.5 Setting Up the Display

Note: The factory-defined programming language is English. The instrument will revert to English after a software upgrade or when the default values are restored.


2. Use the LEFT ARROW key to highlight SERVICE. Press ENTER.

3. Use the LEFT ARROW key to highlight DISPLAY. Press ENTER.


Table 7 mA Outputs Programming Parameters

Outputs 1/2

AFFECT Conc. µA °C/°FUsed to determine whether the analog output is assigned to current, concentration, or temperature measurement.

TYPE 0/20 or 4/20 Used to select the analog output range.

MODE Lin or Bi-lin Choose a linear or bi-linear scale (see Figure 20).

LOW XXXX Scale starting value

MIDDLE XXXX Scale middle value (bi-linear)

UP XXXX Scale ending value

Special Program

MODE Preset/Last/Live

Action of the analog output during calibration, system alarm, maintenance, or active timer cycles: Return to a preset value

Return to the last value before the event

Live = live measurement

VALUE XX Used to define the return value (0–21 mA)

TEST Used to test analog outputs in 1 mA steps (0–21 mA)

(%)

(mA)Bi-linear

Linear

4

20

0 20 30 40 50 60 70 80 90 10010

29


5.6 Setting the Numeric Password (Code)

1. From the Main display, push the RIGHT ARROW key.


3. Use the LEFT ARROW key to highlight CODE. Press ENTER.

4. Enter the four-digit protection codes for the PROGRAMMING, CALIBRATION and SERVICE menus, respectively. Deactivate the codes by entering 0000 in the code field.

5. If you forget a protection code, press ESC and ENTER simultaneously to access the menu without inputting a code.

5.7 Adjusting the mA SettingsThe analog output values are factory set to 4–20 mA. However, the 20 mA can be adjusted on the outputs, following the steps below:

1. Connect an ammeter to the terminals of the analog outputs.

2. From the Main screen, push the RIGHT ARROW key.


4. Use the LEFT ARROW key to highlight ADJUST mA. Press ENTER.

5. Use the LEFT ARROW key to highlight Output 1 or Output 2.

6. Adjust the value until 20.0 mA is displayed on the ammeter.

5.8 Setting Up the RS485 OutputsThe RS485 board connects the analyzer to a digital communication system. The communication protocol used is MODBUS/JBUS. See Section 8 on page 39 for more information.

1. From the Main screen, push the RIGHT ARROW key.


Table 8 Display Programming Parameters

CONCppb/ppm

µg/L–mg/L% Saf

Select the concentration

TEMP.°C

°FSelect the temperature unit.

LANGUAGE

F (French)

Select the language.

GB (English)

D (German)

SP (Spanish)

I (Italian)

30


3. Use the LEFT ARROW key to highlight RS485. Press ENTER.


5.9 Calculating the Average Concentration



3. Use the LEFT ARROW key to highlight AVERAGE. Press ENTER.

5.10 Identifying the Software Version



3. Use the LEFT ARROW key to highlight SOFT. ISSUE. Press ENTER. This menu displays the software version number.

5.11 Loading Default Values



3. Use the LEFT ARROW key to highlight DEFAULT VAL. Press ENTER.

4. Press Yes. You will reload the default values and will lose any programmed values, along with calibration parameters.

Table 9 RS485 Outputs Programming Parameters

Display Value Description

N° 91XX Model number (0–32)

BAUD 300, 600, 1200, 2400, 4800, 9600 Transmission speed in bauds

PARIT.

No No parity bit

Even With even parity bit

Odd With off parity bit

STOP BIT1 1 stop bit

2 2 stop bits

Table 10 Calculating Average Concentration

AVERAGE Used to program a sliding mean for concentration measurement.

AVERAGE X Number of measurements taken for mean calibration.

TEST Used to view the difference between a measurement with or without mean.

31


5.12 Setting the Frequency of the Power Source



3. Use the LEFT ARROW key to highlight CONFIGURATION. Press ENTER.

4. Choose the frequency of your power source. Press ESC to return to Display 2.

5.13 Using the Maintenance FunctionUse this function during all instrument maintenance operations. The Instrument will continue to display the measured values, but the outputs and relays are frozen.


2. Use the LEFT ARROW key to highlight MAINTENANCE. Press ENTER.

3. Enter the password, if necessary.

32

Section 6 Calibrating the Sensors

6.1 Calibrating the Temperature SensorThe free chlorine probe contains a temperature sensor. The sensor is factory pre-set but requires on-site calibration in the sample.


2. Use the LEFT ARROW key to highlight CALIBRATION. Press ENTER.

Note: Measure the sample temperature with a high precision thermometer.

3. Use the LEFT ARROW key to highlight TEMP. CALIB. Press ENTER.

4. Press ENTER to select EXECUTION.

5. Highlight EXECUTION. Press ENTER. Wait for the temperature to appear. Press ENTER when the temperature stabilizes.

6. Press the RIGHT ARROW key to highlight the temperature values displayed on the bottom left of the screen.

7. Adjust the displayed temperature to the actual value of the sample in degrees Celsius. Press ESC. The deviation between the calibration and the sensor theoretical response curve is provided.

6.1.1 Temperature Conversion Table

Conversion from: °C to °F:

Conversion from °C to K:

Table 11 Temperature Conversions

°C °F K °C °F K

0 32 273.15 23 73.4 296.15

1 33.8 274.15 24 75.2 297.15

2 35.6 275.15 25 77 298.15

3 37.4 276.15 26 78.8 299.15

4 39.2 277.15 27 80.6 300.15

5 41 278.15 28 82.4 301.15

6 42.8 279.15 29 84.2 302.15

7 44.6 280.15 30 86 303.15

8 46.4 281.15 31 87.8 304.15

9 48.2 282.15 32 89.6 305.15

10 50 283.15 33 91.4 306.15

11 51.8 284.15 34 93.2 307.15

12 53.6 285.15 35 95 308.15

13 55.4 286.15 36 96.8 309.15

14 57.2 287.15 37 98.6 310.15

15 59 288.15 38 100.4 311.15

16 60.8 289.15 39 102.2 312.15

17 62.6 290.15 40 104 313.15

18 64.4 291.15 41 105.8 314.15

°F 1.8 °C 32+×=

K °C 273.15+=

33

Calibrating the Sensors

6.2 Choosing the Calibration MethodCalibrate the slope by comparing it to a laboratory measurement and set the zero calibration with either a chemical zero, or with the electrical zero. For most users, Hach recommends using the Electrical Zero Calibration. An optional chemical zero cartridge is available. The recommended reference method for a chemical calibration is DR/2500 AccuVac™ Method (Cat. No. 2505025).

6.3 Choice of Calibration Values

Note: All results (calibration or measurements) are normalized to the reference temperature (25 °C, 77 °F). If the sample's temperature is different than the reference temperature, automatic temperature compensation will correct the value. However, sufficient time must be allowed for the sensor to reach temperature equilibrium.

In processes that have significant variations in chlorine concentration, i.e., in a water tower, the calibration point should be found in the upper values rather than in the lower values. This maximizes the precision of the apparatus. Any imprecision in the comparison measurement will be reflected in the calibrated measurements made by the instrument. Avoid this by using a reliable comparison method.

6.4 Calibrating the Hydrazine Sensor

6.4.1 Electrical Zero Calibration



3. Use the LEFT ARROW key to highlight CONC. CALIB. Press ENTER.

4. Use the LEFT ARROW key to highlight ZERO. Press ENTER.

5. Press ENTER to select PROGRAMMING.

6. Use the RIGHT ARROW key to highlight ELECAUTO. Press ENTER.

7. Press the ESC key once.

19 66.2 292.15 42 107.6 315.15

20 68 293.15 43 109.4 316.15

21 69.8 294.15 44 111.2 317.15

22 71.6 295.15 45 113 318.15

Table 11 Temperature Conversions (continued)

°C °F K °C °F K

34


6.4.2 Chemical Zero Calibration

Note: Calibration can be stopped at any time by pressing ESC. The instrument will then revert to the previous calibration.

In this procedure, use a sample that does not contain hydrazine or any other oxygen scavengers. Ensure that the sample source has a sufficient flow rate and that the sample is adequately mixed.




4. Use the LEFT ARROW key to highlight ZERO. Press ENTER.

5. Press ENTER to select PROGRAMMING.

6. Use the RIGHT ARROW key to highlight CHEMICAL. Press ENTER.


8. Use the LEFT ARROW key to highlight EXECUTION. Press the ENTER.

9. The CAL message flashes, indicating that the instrument is in calibration mode. Wait for a stable current, then press OK. The instrument displays the zero for a few seconds, then returns to the previous level.


6.4.3 Slope Calibration

Note: Collect the sample for reference analysis from the inlet tube before it enters the analyzer because a significant amount of hydrazine is consumed during passage through the measurement cell.




4. Use the LEFT ARROW key to highlight SLOPE. Press ENTER. The CAL message flashes, indicating that the instrument is in calibration mode.

5. Wait for a stable current, then press OK, then immediately take a sample for comparison analysis.

Note: Hach recommends using the DR2500/DR4000 hydrazine or carbohydrazide standard methods 8141 and 8140.

6. Adjust the value and units of the hydrazine concentration to the reference value obtained by a standard method. To change a numeric value:

a. Select the value with the LEFT ARROW key.

b. Use the RIGHT ARROW key to highlight and change the leftmost digit.

c. Press the ENTER key to move to the next digit to the right.

d. Use the RIGHT ARROW key to change additional digits as needed.

e. Press the ENTER key as many times as needed to accept the value.

7. The analyzer then displays the date of the last calibration, along with the calculated slope. Alter the date if necessary.

35


6.4.4 Viewing Calibration History



3. Use the LEFT ARROW key to highlight HISTORIC. Press ENTER.

6.4.5 Calibration-related Messages

Error: ∆T OUT OF LIMITSThe temperature difference between the calibration and the theoretical sensor response is greater than the authorized limit. Limits: ±20 °C.

Error: OUT OF 4/20 mAThe measured value is out of the programmed scale start and end range for analog outputs 1 and 2 (PROGRAMMING/mA OUTPUTS/OUTPUT 1 or 2).

Timer Icon appearsWhen the S4 relay is used as a Timer, a countdown is displayed for the start of the relay execution cycle. This countdown is expressed in hours:minutes, with the exception of the last ten minutes, where it is expressed in hours:minutes:seconds.

Table 12 Viewing Calibration History

Parameters

DATE xx/xx/xx Date of the last calibration. The programmed date is not automatically updated.

P x.xxx µA/ppm Slope value

ZERO x.xxx nA Offset value

∆T x.x °CDeviation between theoretical temperature (sensor curve) Th and measured temperature

History

DATE xx/xx/xx Date of calibration n–1

P x.xxx nA/ppm Value of slope n–1

DATE xx/xx/xx Date of calibration n–2

P x.xxx nA/ppm Value of slope n–2

Tm:∆T Th Tm–=

36

Section 7 Maintenance

DANGEROnly qualified personnel should conduct the maintenance tasks described in this section of the manual.

7.1 Scheduled Maintenance

7.1.1 Refilling the pH ConditionerReplenish the reagent every 3 months, or more frequently if necessary.

CAUTIONTo familiarize yourself with handling precautions, dangers, and emergency procedures, always review the Material Safety Data Sheets prior to handling containers, reservoirs, and delivery systems that contain chemical reagents and standards. Protective eye wear is always recommended when contact with chemicals is possible.

The standard conditioner cap fits on Merck bottles. An optional cap is available that adapts wide-mouth Nalgene bottles to the pH conditioner/bottle cap (Cat. No. 09073=C=0350. These caps avoid the transfer to the original bottle DIPA available from Hach. Other adapters are available on request.

Replenish the pH conditioner every 1–3 months, depending on the particular chemical chosen. A minimum pH of 10.2 should be maintained when measured at the drain. To verify pH for ≥ 10.2 use DIPA supplied by Hach (Cat. No. 28344-53). Monoethyamine, diethylamine and ammonia can also be used.

7.1.2 Replacing the TubingReplace the tubing annually. Use only Kynar® or Teflon® tubing (Cat. No. 151575,00006).

7.1.3 Replacing the In-line FilterReplace the In-line Filter (Cat. No. 363877,06000) every 1 to 6 months, depending on sample conditions.

7.2 Unscheduled Maintenance

7.2.1 Replacing the Fuse

DANGERRemove power from the instrument when removing or installing a fuse.

The T, 2 A, 250 V fuse (Cat. No. 295=100=203) used in this instrument is used for both 115 V and 230 V operation.

Replace as follows:

DANGERFor continued protection against fire hazard, replace the fuse only with a fuse of the same type and rating.

1. Make sure there is no power supplied to the instrument.

2. Remove the front cover and the shielding plate inside the instrument.

3. Locate the fuse holder. Using a flat-head screwdriver, gently push in the fuse holder and rotate it to the left.

4. Gently pull the fuse holder out of the instrument.

5. Replace the fuse with an identical fuse.

6. Insert the fuse holder into its compartment. With the flat-head screwdriver, gently push it in and rotate it to the right.

7. Replace the shielding plate and the front cover.

37

Maintenance

8. Reconnect power to the instrument.

7.2.2 Cleaning the InstrumentWith the enclosure securely latched, use a soft cloth and a mild detergent to wipe the outside of the enclosure. Do not use solvents. Do not allow moisture to enter the enclosure.

7.2.3 Cleaning the Measuring BlockOnce a month, check the platinum anode for deposits. If dirty, do not remove, but clean the measuring block.

1. Turn off the sample flow from the flow meter.

2. Using a syringe, inject 10% nitric acid (Cat. No. 2540-49) into the measuring cell via the venturi-valve inlet tubing.

3. Wait five minutes for the acid to react.

4. Turn the sample flow on and set 12 L/hour.

5. Recalibrate the instrument. Refer to section 6.4 on page 34.

38

Section 8 Modbus Communication

8.1 IntroductionThe 9186 supports bi-directional Modbus communication over the integrated RS485 interface. This provides multi-drop, digital network capability that can be used to connect multiple 9186 series transmitters to a Programmable Logic Controller (PLC) or Personal Computer (PC). The 9186 is designed as a Modbus RTU slave, which allows a Modbus RTU master to access measurements, settings, and alarms.

8.2 Modbus SettingsThe following Modbus settings are available in the RS485 menu of the 9186. To access the RS485 menu, select MENU, PROGRAMMING, RS485, then select the appropriate menu item as follows.

8.2.1 NThis menu item selects the Modbus slave address. Valid choices are 1–247. The default setting is 1.

8.2.2 BaudThis menu item selects the baud rate used for serial communications. This setting must match the baud rate of the Modbus master. Valid choices are 300, 600, 1200, 2400, 4800, 9600, or 19200. The default setting is 19200.

8.2.3 ParityThis menu item selects the parity used for serial communications. This setting must match the parity of the Modbus master. Valid choices are No, Odd, or Even. The default setting is No.

8.2.4 Stop BitThis menu item selects the number of stop bits used for serial communications. This setting must match the stop bit setting of the Modbus master. Valid choices are 1 or 2. The default setting is 1.

8.2.5 Swap WordThis menu item selects the floating point word order. Some PLC systems require the two 16-bit registers be swapped when creating a 32-bit floating point number. Valid choices are Yes or No. The default setting is Yes.

8.3 Modbus Function CodesFour types of Modbus messages are supported by the 9186. Each message consists of a query (request from the master) and a response. These messages are described in section 8.3.1.

39

Modbus Communication

8.3.1 Read Input Registers—Function Code 03This command reads the binary contents of a holding register in the 4xxxx address range. The query message specifies the starting register and quantity of registers to be read. Registers are addressed starting at zero. Table 13 is an example that requests the value from register 40001.

Assume that register 40001 contains the value 5 (see Table 14).

8.4 Write Input Register—Function Code 06This command writes the binary contents of a single holding register in the 4xxxx address range. The query message specifies the register address and value to be written. Registers are addressed starting at zero. The following message writes the value 5 to register 40004 (see Table 15). Table 16 shows the response.

Table 13 Read Input Register Query

Field Name Hex Value

Slave address 01

Function 03

Starting address high byte 00

Starting address low byte 01

Number of registers high byte 00

Number of registers low byte 01

CRC high byte 84

CRC low byte 0A

Table 14 Read Input Register Response


Slave address 01

Function 03

Byte count 02

Data high byte (register 40001) 00

Data low byte (register 40001) 05

CRC high byte 78

CRC low byte 47

Table 15 Write Input Register Query


Slave address 01

Function 06



Data high byte 00

Data low byte 05

CRC high byte B9

CRC low byte C9

40


8.4.1 Write Multiple Input Registers—Function Code 16 (10 Hex)This command writes the binary contents of multiple holding registers in the 4xxxx address range. The query message specifies the starting register address and values to be written. Registers are addressed starting at zero. The following message writes the value 1, 2, 3, and 4 to registers 40001, 40002, 40003, and 40004 respectively (see Table 17). Table 18 shows the response.

Table 16 Write Input Register Response


Slave address 01

Function 06



Data high byte 00

Data low byte 05

CRC high byte B9

CRC low byte C9

Table 17 Write Multiple Input Registers Query


Slave address 01

Function 10



Data high byte 00

Data low byte 05

CRC high byte B9

CRC low byte C9

Table 18 Write Multiple Input Registers Response


Slave address 01

Function 06





Byte count 08

Data high byte 00

Data low byte 01

Data high byte 00

Data low byte 02

Data high byte 00

Data low byte 03

Data high byte 00

41


8.4.2 Report Slave ID—Function Code 17 (11 Hex)This command returns a description of the type of controller present at the slave address.

8.4.3 Floating Point SupportThe original Modbus protocol specification did not support floating point numbers. These are implemented in the 9186 as IEEE 754 floating point numbers, and are stored in two back-to-back 16 bit registers. Table 19 is an example that requests the value from register 40001-40002.

Assume that the register combination 40001 and 40002 contains the 32-bit value 7.0 (see Table 20).

Note that it is up to the master to decipher the floating point representation of the 4 bytes, based on the IEE 754 standard. If the floating point numbers are displayed incorrectly, the word order may need to be swapped. See section 8.2.5 on page 39 for more information on swapping words within floating point numbers.

Data low byte 04

CRC high byte 2E

CRC low byte B9

Table 18 Write Multiple Input Registers Response (continued)


Table 19 Read Input Register Query


Slave address 01

Function 03





CRC high byte C4

CRC low byte 0B

Table 20 Read Input register Response


Slave address 01

Function 03

Byte count 04


Data low byte (register 40001) 00


Data low byte (register 40002) E0

CRC high byte B9

CRC low byte C9

42


8.5 Register InformationThe fields shown in the register map are as follows:

Register—Modbus register number. Note that each register is 16 bits in length. Floating point registers occupy two back-to-back 16-bit registers.

Data Type—Representation of the data. Can be floating point, integer, bit or string.

Length—The number of 16-bit registers.

R/W—R for read only or R/W for read/write.

Units—A number corresponding to the type of units. The names of each unit are shown in section 8.2.5 on page 39. An “Rxxxxx” indicates the units are selectable, and are located in register number xxxxx.

Description—A description of the register.

8.5.1 Register Map

Table 21 Register Map

Register Data Type Length R/W Units (U) Description

40000 Float 2 R R40075 Concentration measurement

40002 Float 2 R R40076 Temperature measurement

40004 Float 2 R 27 Intensity measurement

40006 Float 2 R 28 Flow rate measurement

40008 Float 2 R R40075 Concentration of calibration offset

40010 Float 2 R R40075 Concentration of calibration gain

40012 Float 2 R R40076 Temperature calibration offset

40014 Float 2 R — Reserved for future application

40016 Float 2 R 25 pH calibration gain

40018.1 Bit 1 R — Instrument alarm (programmable)




40019 Integer 1 R — MONEC status

40020 Integer 1 R/W — Alarm 1 type (enum)

40021 Float 2 R/W — Alarm 1 setpoint

40023 Integer 1 R/W — Alarm low/high

40024 Integer 1 R/W 15 Alarm 1 delay

40025 Integer 1 R/W 10 Alarm 1 hyst

40026 Integer 1 R/W — Relay 1 characteristic



40030 Integer 1 R/W — Alarm 2 low/high



43



40034 Integer 1 R/W — Alarm 3 mode







40042 Integer 1 R/W — Alarm system acquitment

40043 Integer 1 R/W — Alarm 4 mode







40051 Integer 1 R/W — Output signal 1 affectation

40052 Integer 1 R/W — Range output signal 1

40053 Integer 1 R/W — Output signal type 1

40054 Float 2 R/W — Recorder 1 minimum

40056 Float 2 R/W — Recorder 1 middle

40058 Float 2 R/W — Recorder 1 maximum

40060 Integer 1 R/W — Output signal 2 affectation

40061 Integer 1 R/W — Range output signal 2

40062 Integer 1 R/W — Output signal 1 type

40063 Float 2 R/W — Recorder 2 minimum

40065 Float 2 R/W — Recorder 2 middle

40067 Float 2 R/W — Recorder 2 maximum

40069 Integer 1 R/W — RS485 address

40070 Integer 1 R/W — Baud rate

40071 Integer 1 R/W — Parity

40072 Integer 1 R/W — Bit stop

40073 Integer 1 R/W — Swap word

40074 Integer 1 R/W — Average

40075 Integer 1 R/W — Concentration unit

40076 Integer 1 R/W — Temperature unit

40077 Integer 1 R/W — Language

40078 String 5 R/W — Serial number (10 characters max, null terminated)

Table 21 Register Map (continued)

Register Data Type Length R/W Units (U) Description

44


8.5.2 Units DefinitionMany of the registers in this section have associated units. The numbers associated with each unit are shown in Table 22.

Table 22 Units of Measure

Value Units Description

0 mg/L milligrams per liter

1 g/L grams per liter

2 ppm parts per million

3 ME milli extinction

4 E Extinction

5 m-1 per meter

6 FNU Formazin nephelon unit

7 NTU nephelometric turbidity unit

8 TE/F German Formazin nephelometric unit

9 EBC European brewery congress

10 % percent

11 nm nanometer

12 mm millimeter

13 m meter

14 ms millisecond

15 S second

16 ma milliampere

17 mV milivolt

18 mNTU milli-NTU

19 mFTU milli-FTU

20 mTE/F milli-TE/F

21 m% milli-percent

22 Counts counts

23 C degrees C

24 F degrees F

25 pH pH

26 mV/pH millivolts per pH unit

27 µA micro ampere

28 L/h flow rate in liters per hour

45


8.6 Network ConnectionsThe 9186 uses RS485 digital communications. RS485 is multi-drop network, meaning multiple devices can be “daisy chained” on a single pair of wires.

8.6.1 RS485 ConnectionsTable 23 lists the connections to the RS485 network.

8.6.2 TerminatorTo preventing “ringing” on the RS485 network, a terminator jumper is provided on the RS485 interface board, next to connector K101. The terminator should be enabled on the last device on the network. Set the jumper as follows:

Position 0—Terminator disabled

Position 1—Terminator enabled (last device on RS485 network)

8.6.3 Network CableThe recommended wire is a two-wire shielded RS485 communication cable.

8.6.4 RS232 to RS485 ConverterAn optional RS232 to RS485 converter may be required to convert the RS485 signal to RS232 on Programmable Logic Controllers (PLC) or Personal Computers (PC). Only one converter is required for each RS485 network.

Table 23 RS485 Connections

Connector Pin Function 57012-00 Wire Color

K101 1 Data (+) Blue

K101 2 Data (–) White

K9 1 or 2 GND Shield

Hach Catalog Number Belden Part Number Cable Type

57012-00 9841 2-wire Shielded

Hach Catalog Number Description

57378-00 Isolated RS232 to RS485 converter, 115 V ac

57379-00 Isolated RS232 to RS485 converter, 230 V ac

46

Section 9 Troubleshooting

9.1 Troubleshooting Error MessagesWhen an error occurs, the measurement values are replaced by dashes, (- - -).

Message Type Error Message Solution

Measurement-related Error Messages

CONCENTRATION TOO HIGH Check the current value, along with the calibration parameters.

CONCENTRATION TOO LOW Check the current value, along with the calibration parameters.

TEMPERATURE ERROR Check for short-circuit or open circuit.

CURRENT TOO LOW Negative current. Check the electrode (electrolyte and membrane).

CURRENT TOO HIGHEnsure that there are no short-circuits on the measurement chain. Check the polarizing voltage.

Calibration-related Error Messages

∆T OUT OF LIMITSThe temperature difference between calibration and the theoretical sensor response is greater than the allowed limit. Limits: ±20 °C

OUT OF 4/20 mAThe measured value is out of the programmed scale range for analog outputs 1 and 2.

47

Troubleshooting

9.2 Detecting Electrical Faults

Problem Symptom Solution

No display

No power

Loose connectionsCheck the power supply and the connection.

Faulty fuse Check the fuse.

The power source has the wrong voltage Check the voltage level.

The cable connecting the power board to the CPU board is poorly connected

Check that the terminal strips are connected.

Incorrect connection between the CPU board and measurement module

Check connections.

Short-circuit in the power board Visually inspect the power board.

Faulty hardware. Failed display Call technical support.

The display shows undefined characters

Poor CPU board or processor operation Program the instrument to load the default values.

CPU board hardwareRe-initialize by turning the instrument off for 5 to 10 seconds. Call technical support.

Faulty display Call technical support. Order 09125=A=1000

The keyboard doesn't work; the keys are inactive

Poor CPU board operation, external interference

1. Re-initialize by turning the instrument off for 5 to 10 seconds.

2. Check the keys once more.

3. If there is no change, call technical support.Bad key pad or display

Incorrect measurement

The instrument has not been correctly programmed

Check the program parameters. Do they match the probe properties?

Faulty CPU board Call technical support. Order 09125=A=1000

Display appears to be locked and cannot be altered

Faulty CPU board

Check probe connection.

Reinitialize.

Reprogram the instrument.

Turn off the power for 5-10 seconds.

If problems persist, call technical support.

Alarm relays do not trigger

The transmitter has not been correctly programmed

Check that the relay parameters have been programmed.

Faulty wiring Make sure that the alarm values are set correctly.

Faulty hardwareRemove power. Check relay operation with an ohmmeter.

If problems persist, call technical support.

Output current remains at 0 or 20 mA

Incorrect programming Check the output current parameters.

Poor or faulty connection with peripheral devices

Check the cables.

Faulty output board Call technical support.

48

9186Parts.fm Parts and Accessories

Section 10 Parts and Accessories

Description Catalog Number9186 Hydrazine Analyzer w/RS485 ....................................................................................................19186=A=3011918X Amperometric Measurement RS485 Board...............................................................................09180=A=1501Adjustable Flow Meter........................................................................................................................... 694=000=001Cable, shielded, 2-wire, (per ft) .................................................................................................................... 57012-00Cleaning Bead (qty 1) .......................................................................................................................... 588801,75008 Complete Flow Controller Assembly ...................................................................................................09186=A=0400Conditioning Bottle ..............................................................................................................................09186=A=0200Conduit Adapter, large .......................................................................................................................... 425=135=222Conduit Adapter, small .......................................................................................................................... 425=110=221Connection Cables for Working/Reference/Counter Electrodes ....................................................... 09186=A=0500CPU board with display.......................................................................................................................09125=A=1000Diisopropylamine, 99% ................................................................................................................................. 2834453 EPROM N2H4......................................................................................................................................09180=A=6200Flow meter ........................................................................................................................................... 510100,01610 Fuse, 2A, 250V ..................................................................................................................................... 295=100=203In-line filter (qty 1) ................................................................................................................................ 363877,06000Instruction Manual................................................................................................................................. 621=691=087Isolated RS232 to RS485 converter, 115 V ac (optional) ............................................................................ 57378-00Isolated RS232 to RS485 converter, 230 V ac (optional) ............................................................................ 57379-00Measuring Cell ....................................................................................................................................09186=A=0100Power Cord, 230 V (optional), 8 ft long ......................................................................................................... 4743900Power Cord, 125 V (optional), 6 ft long ......................................................................................................... 4696400Power Supply Board............................................................................................................................09125=A=2000PP fitting ¼-inch.................................................................................................................................... 587=006=012Reference Electrode (no cable) ........................................................................................................... 368429,00000RS485 board + manual .......................................................................................................................09125=A=0485Syringe................................................................................................................................................. 560150,21957Tubing, ¼” OD (inlet) ............................................................................................................................ 151575,00006Two year spare parts kit, includes.......................................................................................................09186=A=8000

6 x filters1 x reference electrode1 x venturi injection nozzle7 x plastic beads6 meters of ¼” PE tubing

Venturi Block and Body .......................................................................................................................09186=C=0110Venturi Nozzle ..................................................................................................................................... 359090,00024Working Electrode...............................................................................................................................09186=A=0300

Section 11 How to Order

U.S.A. Customers

By Telephone:6:30 a.m. to 5:00 p.m. MSTMonday through Friday(800) 227-HACH (800-227-4224)

By Fax:(970) 669-2932

By Mail:Hach CompanyP.O. Box 389Loveland, Colorado 80539-0389 U.S.A.

Ordering information by e-mail: [email protected]

Information Required

International CustomersHach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send e-mail to [email protected] or contact:

Hach Company World Headquarters; Loveland, Colorado, U.S.A.Telephone: (970) 669-3050; Fax: (970) 669-2932

Technical and Customer Service (U.S.A. only)Hach Technical and Customer Service Department personnel are eager to answer questions about our products and their use. Specialists in analytical methods, they are happy to put their talents to work for you.

Call 1-800-227-4224 or e-mail [email protected]

• Hach account number (if available) • Billing address

• Your name and phone number • Shipping address

• Purchase order number • Catalog number

• Brief description or model number • Quantity

50

Section 12 Repair Service

Authorization must be obtained from Hach Company before sending any items for repair. Please contact the Hach Service Center serving your location.

In the United States:

In Canada:Hach Sales & Service Canada Ltd.1313 Border Street, Unit 34Winnipeg, ManitobaR3H 0X4(800) 665-7635 (Canada only)Telephone: (204) 632-5598FAX: (204) 694-5134E-mail: [email protected]

In Latin America, the Caribbean, the Far East, theIndian Subcontinent, Africa, Europe, or the Middle East:Hach Company World Headquarters,P.O. Box 389Loveland, Colorado, 80539-0389 U.S.A.Telephone: (970) 669-3050FAX: (970) 669-2932E-mail: [email protected]

51

Section 13 Warranty

Hach Company warrants this product to the original purchaser against any defects that are due to faulty material or workmanship for a period of one year from date of shipment.

In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price, excluding original shipping and handling charges. Any product repaired or replaced under this warranty will be warranted only for the remainder of the original product warranty period.

This warranty does not apply to consumable products such as chemical reagents; or consumable components of a product, such as, but not limited to, lamps and tubing.

Contact Hach Company or your distributor to initiate warranty support. Products may not be returned without authorization from Hach Company.

LimitationsThis warranty does not cover:

• Damage caused by acts of God, natural disaster, labor unrest, acts of war (declared or undeclared), terrorism, civil strife or acts of any governmental jurisdiction

• Damage caused by misuse, neglect, accident or improper application or installation

• Damage caused by any repair or attempted repair not authorized by Hach Company

• Any product not used in accordance with the instructions furnished by Hach Company

• Freight charges to return merchandise to Hach Company

• Freight charges on expedited or express shipment of warranted parts or product

• Travel fees associated with on-site warranty repair

This warranty contains the sole express warranty made by Hach Company in connection with its products. All implied warranties, including without limitation, the warranties of merchantability and fitness for a particular purpose, are expressly disclaimed.

Some states within the United States do not allow the disclaimer of implied warranties and if this is true in your state the above limitation may not apply to you. This warranty gives you specific rights, and you may also have other rights that vary from state to state.

This warranty constitutes the final, complete, and exclusive statement of warranty terms and no person is authorized to make any other warranties or representations on behalf of Hach Company.

Limitation of RemediesThe remedies of repair, replacement or refund of purchase price as stated above are the exclusive remedies for the breach of this warranty. On the basis of strict liability or under any other legal theory, in no event shall Hach Company be liable for any incidental or consequential damages of any kind for breach of warranty or negligence.

52

9186 oxygen scavenger analyzer instrument manual

Documents

general description

line filter

environmental considerations

inlet tubing

outlet tubing

sample line location

ed hach company

edtable of contents2section