TGM ® 4 GAS Monitor

instruction manual

THIS MANUAL MUST BE CAREFULLY READ BY ALL INDIVIDUALS WHO HAVE OR WILL HAVETHE RESPONSIBILITY FOR INSTALLING, USING OR SERVICING THIS PRODUCT. Like any pieceof complex equipment, this product will perform as designed only if installed, used and serviced in accordancewith the manufacturer’s instructions. OTHERWISE, IT COULD FAIL TO PERFORM AS DESIGNEDAND PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD SUSTAIN SEVEREPERSONAL INJURY OR DEATH.

The warranties made by Mine Safety Appliances Company with respect to these products are voided if theproducts are not installed, used and serviced in accordance with the instructions in this manual. Pleaseprotect yourself and others by following them. We encourage our customers to write or call regarding thisequipment prior to use or for any additional information relative to use or repair.

INSTRUMENT DIVISION 1-800-MSA-INST or FAX (412) 776-9783MSA INTERNATIONAL (412) 967-3228 or FAX (412) 967-3373

© Mine Safety Appliances Company 1996 - All Rights Reserved

Manufactured by

MSA Canada Inc.,TORONTO, ONTARIO M3N 1X8

Distributed by

MINE SAFETY APPLIANCES COMPANYPITTSBURGH, PENNSYLVANIA 15230

REV 3.1 07.02.98 212818

World Wide Product Support Locations

HeadquartersMSA InternationalP.O. Box 426Pittsburgh, PA 15230TEL: (412) 967-3249FAX: (412) 967-3451

AustraliaMSA (Aust.) Pty. Ltd.137 Gilba RoadP.O. Box 43, WentworthvilleSydney. GirraweenNSW 2145, AustraliaTEL: (02) 688-0333FAX: (02) 896-3224

BrazilMSA do Brasil, Ltda.Av. Roberto Gordon. 138Caixa Postal 37609901-970 DiademaSao Paulo, BrazilTEL: (11) 445-1499FAX: (11) 456-6433

CanadaMSA Canada Inc.148 Norfinch DriveNorth York, OntarioM3N 1X8, CanadaTEL: (416) 667-9400FAX: (416) 663-5908

ChileMSA de Chile Ltda.Avda. Salvador 1434Casilla 16647, Correo 9Santiago, ChileTEL: (2) 2255377FAX: (2) 2250799

ChinaWuxi-MSA SafetyEquipment Co. Ltd.305 Xicheng RoadWuxi City. Jiangsu ProvincePeoples Rep. Of ChinaTEL: (510) 2406134FAX: (510) 2402310

FranceMSA de France13 rue de la GuivernoneBP61795004 Cergy Pointoise CedexTEL: (1) 34323432FAX: (1) 30376305

GermanyAuergesellschaft GmbHP.O. Box 620D-12006 BerlinGermanyTEL: (30) 6886-0FAX: (30) 6886-115

Great BritainMSA (Britain) Ltd.East ShawheadCoatbridge, ML5 4TDScotland, Great BritainTEL: (236) 424966FAX: (236) 440881

HungaryMSA Auer HungariaBiztonsagtechikai Kft.Gyomroi ut 140H-1 108 Budapest X.HungaryTEL: (1) 1272-010FAX: (1) 1272-010

IndiaMSA (India) Ltd.P-25 Transport Depot RdCalcutta 700088 IndiaTEL: (33) 49-2206FAX: (33) 4799368

ItalyMSA Italiana S.p.A.P.O. Box 1719-20101Milano, ItaliaTEL: (2) 89-20-19-18FAX: (2) 82-59-228

JapanMSA Japan Ltd.15-21 Roppongi 6-ChomeMinato-KuTokyo 106. JapanTEL: (3) 3403-3918FAX: (3) 3479-0460

MexicoMSA de MexicoS.A. de C.V.Francisco 1. Madero 84Apartado 16853500 Naucalpan de Juarez(Edo de Mexico)TEL: (5) 576-6444FAX: (5) 359-4330

Middle EastMSA Middle EastBin Hamoodah Bldg.Khalifa St.P.O. Box 46338Adu DhabiUnited Arab EmiratesTEL: (2) 325-906FAX: (2) 339-288

NetherlandsMSA Nederland B.V.P.O. Box 391620 AA HoornNetherlandsTEL: (2290) 503-03FAX: (2290) 13340

PeruMSA del Peru S.A.Los Telares 139Urb. Vulcano. Atc. Lima 3Casilla 1933 (Mail)TEL: (14) 35-4065FAX: (14) 36-1491

RussiaSibertechMonocrystal InstituteNovosubirsk, RussiaTEL: (7-3832) 33 12 79FAX: (7-3832) 39 94 03

Southeast AsiaMSA S.E. Asia Pte. Ltd.51 Ayer Rajah Crescent#02-03Singapore 0513TEL: 776-1633FAX: 778-2529

South AfricaBoart MSA (Pty) Ltd.CNR. Kelvin St. &Steel RdSpartan. P.O. Box 1710Kempton Park 1620TEL: (11) 394-5630FAX: (11) 5648

SpainMSA Española S.A.Narciso Monturiol 7Poligono IndustrialApartado de Correos 10408960 Sant Just DesvernBarcelonaTEL: (3) 372-51-62FAX: (3) 372-66-57

SwedenAB TegmaKopparbergsgatan 29S-21444 MalmöTEL: (40) 80200FAX: (40) 968-215

SwitzerlandMSA (Switzerland) Ltd.Grubenstrasse 24-26CH-3072 OstermundingenTEL: (31) 932-1151FAX: (31) 932-113

ZimbabweMSA Zimbabwe (Pvt.) Ltd.P.O. Box AY280, AMBYHarareTel: (4) 486641FAX: (4) 496357

1. The monitor described in this manual should be installed, operated, and main-tained in strict accordance with any labels, cautions, warnings, drawings, in-structions, and within the limitations stated.

2. The TGM Series Gas Monitor must not be installed in areas or locations whereexplosive concentrations of combustible gases or vapours might occur in theatmosphere: Class I, Groups A, B, C, and D areas, as defined by the NEC.Because these monitors are not explosion-proof, they must be located in anon-hazardous area.

3. Use genuine MSA replacement parts when performing any maintenance onthe TGM Series Gas Monitor. Failure to do so may seriously impair instrumentperformance. Repair or alteration of the TGM Series Gas Monitor beyond thescope of these instructions, or by anyone other than a certified MSA serviceperson, could cause the product to fail to perform as designed and personswho rely on this product for their safety, could sustain severe bodily injury ordeath.

4. For safety reasons, this equipment must be operated and serviced by qualifiedpersonnel only. Read and understand the instruction manual completely beforeoperating or servicing a TGM Series Gas Monitor.

TGM4Gas Monitor Table of Contents

TOC-1

Table of Contents

Section 1General Information ........................................................................................ 1-1Introduction ....................................................................................................... 1-1LED Indicators & Relays & Audible Alarm......................................................... 1-1Warning and Alarm Condition, Sensor Failure Condition .................................. 1-1

Section 2Installation and Specifications....................................................................... 2-1Installation of Monitor ........................................................................................ 2-1Operating Specifications ................................................................................... 2-1External Connection: Remote Sensors ............................................................ 2-2Signal Output, Relays, Power ........................................................................... 2-3Setup & Calibration ........................................................................................... 2-4Active Points, Warning & Alarm Setpoints, Warning & Alarm Delays ............... 2-4Alarm Latch ....................................................................................................... 2-5Display Mode, Audible Alarm Device ................................................................ 2-5Analog Output Adjustments .............................................................................. 2-6

Section 3General Operation ........................................................................................... 3-1Scanning, Auto-Ranging ................................................................................... 3-1Warning and Alarm............................................................................................ 3-1Sensor Failure ................................................................................................... 3-1

Section 4Start-Up Procedure for TGM4......................................................................... 4-1Calibration Log .................................................................................................. 4-3Calibration Log .................................................................................................. 4-4Parts List ........................................................................................................... 4-5

Section 5Figure 1: TGM4 Enclosure Drawing .............................................................. 5-1Figure 2: Field Layout Drawing ....................................................................... 5-2Figure 3: TGM4 Panel Layout Connection ...................................................... 5-3Figure 4: Field RS-485 Serial Communication ................................................ 5-4Figure 5: 4-20 mA Analog Communication ..................................................... 5-5Figure 6: 4-20 mA Sensor Wiring .................................................................... 5-6

Section 6CSA Certification ............................................................................................. 6-1FCC Compliance ............................................................................................... 6-1

Appendix AFigure 7A: Troubleshooting Guide for TGM4 .............................................. A-1Figure 7B: Troubleshooting Guide for TGM4 ...................................................A-2Figure 7C: Troubleshooting Guide for TGM4 ...................................................A-3Figure 7D: Troubleshooting Guide for TGM4 ...................................................A-4

TGM4Gas Monitor Table of Contents

TOC-2

Section 1General Information

Introduction

This manual contains instructions for the MSA TGM4 Series Gas Monitor.

Description:

The TGM4 Series Gas Monitor is a micropro-cessor-based monitoring system designed to in-terface with a wide range of MSA Sensors. Atotal of four Sensors can be connected to theTGM4. The system comes complete with au-dible and visual status indication, relay outputs,and adjustable warning and alarm levels, com-plete with reset.

LED Indicators &Relays & Audible Alarm

Warning Condition:

When the gas concentration exceeds thewarning setpoint, the AMBER warning LEDturns on and the warning relay is activated.

The warning relay is non-latching. When theWarning conditions disperse below the setpoint,the relay will re-set.

Alarm Condition:

When the gas concentration exceeds the alarmsetpoint, the RED Alarm LED turns on, the alarmrelay is activated and the audible alarm sounds.

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TGM4 Section 1Gas Monitor General Information

The alarm relay is selectable for non-latchingor latching with H1-9. Standard factory con-figuration is the non-latching mode.

Sensor Failure Condition:

The TGM4 Monitor has Sensor OK LEDs.The Sensor OK LED (Green) goes out if oneor more remote sensors fail and the sensorfail relay is energized. The sensor fail relayis non-latching.

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Section 2Installation and Specifications

TGM4 Section 2Gas Monitor Installation and Specifications

Installation of Monitor

Install the TGM4 Gas Monitor on a wall or struc-ture that is free from shock or vibration. It shouldbe protected against physical damage, water, heatand direct sunlight. Install the Monitor so that itsdoor can be opened and accessed for service.

Operating Specifications

Power Requirements:

Standard 110 volts AC 50/60 Hz± 10% @ 0.5 Amps or(Optional) 220 volts AC 50/60 Hz± 10% @ 0.25 Amps or(Optional) 24 volts DC± 10% @ 1.5 Amps max.

Signal Input:

• 4 to 20 milliamps, 2 or 3-wire connection,

OR

• RS-485, 4-wire connection.

Temperature:

Operating: 0° to 40°C (32° to 104°F)Storage: -10° to 50°C (14° to 122°F)

Sensor Power:

• 24 Volts DC @ 200 milliamps

Relay Contact Ratings:

• 10 Amps 1/8 H.P., 125 Vac

• 6 Amps 1/8 H.P., 277 Vac

• 5 Amps 30 Vdc

Number of Relays:

• WARNING: 4 Relay SPDT,

• ALARM: 1 Relay SPDT,

• SENSOR FAILURE: 1 Relay SPDT

Digital Readout Scale(optional):

• 4 Digit Display (Point # and Gas Level)

Status Display:

• Discrete LED for WARNING, ALARM, and SENSOR OK for each point.

Alarm & Warning Setpoints:

Standard Factory Set @ 35% and 50% of FullScale and Field Adjustable, unless otherwisespecified when ordering.

Sensor Fail Setpoint:

• Non-adjustable

Time Delays:

• Fixed delay of 5 minutes OFF delay for Warning and fixed delay of 5 minutes ON delay for Alarm.

OR

• Field adjustable delays for 0 to 10 minutes.

Audible Alarm:

• Solid ON-Standard Factory Setting (80 - 90 dB @ 1 ft.)

OR

• Variable Sound Pulse

Calibration:

• All units are tested and pre-calibrated at the factory.

Enclosure:

• Standard - Metal NEMA 1• Optional - Fiberglass NEMA 4

Dimensions:

• Height: 15.0” (380 mm)• Width: 12.0” (305 mm)• Depth: 3.75” (95 mm)

External Connections

Perform all wiring and conduit installation inaccordance to the Canadian Electrical Code orthe National Electrical Code or to local electri-cal requirements. Use separate conduits forpower wires, relay wires and signal wires.

Remote Sensors:

A total of four (4) remote sensor can be con-nected to the TGM4. The Sensors may bethe 4-20 mA analog signal type, or the RS-485 serial communications type. The RS-485type sensors may be of different gas type andrange. The TGM4 will automatically adjust it-self to read and interpret the RS-485 sensorsproperly. Use shielded cable for wiring instal-lation. Signal wiring must not be installed inthe same conduit with power or relay wiring.Please refer to sensor wiring diagram (pages5-4, 5-5 or 5-6) and sensor instruction manualfor more details.

WHEN CONNECTING THE REMOTE SEN-SORS, MAKE SURE THAT ALL WIRING ISCORRECT AND THE FOUR LEADS OF THERS-485 BUS ARE NOT INTERCHANGED,OR PERMANENT DAMAGE TO THE SEN-SOR MAY RESULT.

NOTE

MAKE SURE THAT EACH SENSOR ISGIVEN ADDRESS A UNIQUE AD-DRESS ON ITS ADDRESS JUMPERS,OR THE TGM4 WILL NOT BE ABLE TOCOMMUNICATE TO IT. IF AN ANALOGSENSOR IS USED, THE ADDRESS (IN-PUT NO.) THAT IT USES CANNOT BEUSED BY ANY OF THE RS-485 SEN-SORS.

TGM4 Section 2Gas Monitor Operating Specifications

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TGM4 Section 2Gas Monitor External Connections

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Signal Output (optional):

The 4-20 mA analog signal output is the highselect of the four input signals (either 4-20 mAor RS-485).

Relays:

When jumper H1-3 is OUT, all relays arenormally de-energized when inactive, andenergized when activated. When jumper H1-3is IN, all relays are normally energized wheninactive and de-energized when activated. Thisprovides fail-safe operation of the TGM4. Eachrelay has an LED associated with it that showsif the relay is energized.

NOTE

DO NOT USE MONITOR POWER WHENCONNECTING ANY EXTERNAL DEVICES TOTHE RELAY CONTACTS. USE A SEPARATEPOWER SOURCE.

DO NOT EXCEED THE CONTACT RATINGSMARKED ON THE RELAYS.

Power:

Connect power supply (110 Vac 50/60 Hz) toterminal strip G, N and L. (Refer to pages 5-4,5-5, or 5-6). Follow the applicable electricalcode requirements when installing and wiringthe unit.

The power wiring must be separated from thesignal wiring and relay wiring; use differentconduit run for power, signal and relay wiring.

The fuse at the input is a 500 mA SloBlo typefuse (BUSSMAN MDL 1/2 or equivalent).

REPLACE FUSE ONLY WITH ONEOF SAME RATING AND TYPE

TGM4 Section 2Gas Monitor Setup & Calibration

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Setup & Calibration

Active Points:

The number of active scanning points (same asnumber of remote sensors) can be set by the firsttwo jumpers (H1-1, H1-2). The jumpers are bi-nary encoded. If no jumpers are inserted, thenonly one point (address 1) is scanned. To scanmore points, insert jumpers such that the deci-mal equivalent of the binary code on H1-1 andH1-2 plus one, equals the number of points to bescanned.

Warning & Alarm Setpoints:

There are two methods for setting the warningand alarm setpoints. The first uses pre-pro-grammed, fixed setpoints of 35% for warning and50% for alarm. The second allows for adjustingthe setpoints anywhere from 0% to 100% via twopotentiometers (labelled: WARNING, ALARM).To select the fixed setpoints, jumpers H1-7(WARNING) and/or H1-8 (ALARM) must be re-moved. To select the adjustable setpoints, jump-ers H1-7 (warning) and/or H1-8 (alarm) must beinserted. Inserting a jumper activates the asso-ciated potentiometer and test point (TP1 for warn-ing and TP2 for alarm). The testpoints show avoltage of 0-5 Vdc for a setpoint of 0-100% FullScale. Using a voltmeter from the testpoints toTPCOM, the setpoint can be adjusted using thefollowing equation:

TP = Setpoint % x 5 Vdc100%

Example:

To set up a warning setpoint of 40% and an alarmsetpoint of 60%,

TP1 should read:

40 x 5 = 2.0 Vdc100

and TP2 should read:

60 x 5 = 3.0 Vdc100

Warning & Alarm Delays:

There are two methods for setting the warningand alarm delays. The first uses pre-pro-grammed, fixed delays of 5 minutes OFF de-lay for warming and 5 minutes ON delay foralarm. The second allows for adjusting thedelays anywhere from 0 to 10 minutes via twopotentiometers (labelled: WARNING DELAY,ALARM DELAY). To select the fixed delays,jumper H1-5 must be inserted. To select theadjustable delays, jumper H1-5 must be re-moved. Removing the jumper activates theassociated potentiometers and test points(TP3 for warning delay and TP4 for alarm de-lay). The testpoints show a voltage of 0-5 Vdcfor a delay of 0-10 minutes. Using a voltme-ter from the testpoints to TPCOM, the delaycan be adjusted using the following equation:

TP = Delay (min.) x 5 Vdc10

Example:

To set up a warning delay of 4 min. and analarm delay of 6 min.

TP3 should read:

4 x 5 = 2.0 Vdc10

TGM4 Section 2Gas Monitor Setup & Calibration

2 - 5

and TP4 should read:

6 x 5 = 3.0 Vdc10

Alarm Latch:

Normally, all relays return to their inactive stateonce their condition has cleared. The alarm relaycan be made to latch in the activated position, evenafter all alarms have cleared. By inserting jumperH1-9, the alarm relay will remain latched after allalarms clear, until the reset button is pressed.

NOTE

Pressing the reset button during the alarm condi-tion does not affect the latching. The reset buttonmust be pressed after the alarm condition hascleared in order to deactivate the alarm relay.

Display Mode:

The display of the TGM4 is auto-ranging for allRS-485 type serial sensors. The display modejumpers have no effect on any RS-485 sensors.The display mode jumpers take effect only if ana-log inputs are used. The incoming analog sig-nals are scaled to the full scale setting of the dis-play mode jumpers. There are two sets of dis-play ranges available: Range A and Range B.Jumper H1-4 selects which display range is ac-tive. If jumper H1-4 is OUT, Range A is selected;if jumper H1-4 is IN, Range B is selected. Thefollowing table shows the various jumper positionsfor the different display modes:

Range A:

Full Scale H2-2 H2-1

999 out out

100 out in

10.0 in out

10.0/100* in in

Range B:

Full Scale H2-2 H2-1

500 out out

200 out in

75 in out

50 in in

*This is a special Display Range that displaysthe first two channels (1 & 2) as 0-10.0 ppmand the second two channels (3 & 4) as 0-100 ppm. This is useful for NO2 / CO applica-tions.

Audible Alarm Device:

The TGM4 has two audible alarm modes. Thefirst is a solid-ON mode that sounds the au-dible alarm continuously while the TGM4 isin an alarm state. The second is a variable-ON mode that sounds the audible alarm in aneight second interval pulsed fashion. The timebetween pulses is fixed, but the on-time ofthe audible alarm is determined by the amountthat the alarming sensor is exceeding thealarm setpoint. For example, if the setpointis at 50% and an alarm comes in at 55%, theaudible alarm would give short beeps everyeight seconds. As the alarm level increasesfrom 55% to 100%, the beeps become longerin duration until a solid tone appears at 100%.

To select the solid-ON audible alarm mode,jumper H1-6 must be inserted. To select thevariable-ON audible alarm mode, jumper H1-6 must be removed.

In both modes, pressing the reset button willsilence the audible alarm, but will not haveany effect on the alarm LED on the front panelor the alarm relay.

TGM4 Section 2Gas Monitor Setup & Calibration

2 - 6

Analog Output Adjustments:(Optional)

The analog output (4-20 mA) is factory calibratedand should not require adjustment. It does notdrift because it is digitally controlled by the mi-cro-processor. If adjustments are required, aZERO and SPAN potentiometer can be used toperform these.

To adjust the output to 4-20 mA for 0-100% in-put (factory setting) apply a 0% (4 mA) signal toone of the inputs and adjust the ZEROpotentiometer until the output reads 4 mA. Thenapply a 100% (20 mA) signal to one of the in-puts and adjust the SPAN potentiometer untilthe output reads 20 mA. If using RS-485 typesensors, a 0% and 100% input can be obtainedby making sure the sensor is not exposed toany gas, or ideally by disconnecting the sensor(the Sensor Fail will then activate - ignore it) fora 0% signal and by inserting the 100% jumperon the back of the sensor board for a 100% sig-nal with the sensor connected.

TGM4 Section 3Gas Monitor General Operation

3 - 1

Section 3General Operation

Scanning:

The TGM4 will scan each active point in se-quence, starting with point one. It will scan up tothe last active point and then repeat from pointone. As each point is scanned, the point numberand the sensor input value are displayed for twoseconds.

Auto-Ranging:

The TGM4 automatically detects the type of sen-sor connected on an RS-485 bus and determinesits full scale value. All setpoints and the displayare adjusted accordingly to match the varioussensors’ full scale levels. If an analog sensor isconnected, the display must be manually adjustedfor the appropriate sensor scale using the displaymode jumpers (see Setup and Calibration).

Warning and Alarm:

The alarm function on the TGM4 is common to allpoints. There is one warning LED and relay andalarm LED for each point and one common alarmrelay for all points. The audible alarm will soundevery time a new alarm occurs. It may be silencedby pressing the reset button.

If the level of any of the active points exceed(s)the warning setpoint, the warning LED for thatpoint will turn on and the warning relay for thatpoint will activate. No alarm is sounded. If allactive points drop below the warning setpoint, thewarning LED will turn off and after a delay de-fined by jumper H1-5 (or the potentiometer) therelay will return to its inactive state.

If the level of any of the active points exceed(s)the alarm setpoint, the alarm LED

for that point will turn on and after a delay de-fined by jumper H1-5 (or the potentiometer)the relay will activate. At the same time therelay activates, the audible alarm will sound.The audible alarm may be silenced by press-ing the reset button. If all active points dropbelow the alarm setpoint, the alarm will silence(if not silenced already by reset button) andthe alarm relay will de-activate if jumper H1-9is not inserted. If jumper H1-9 is inserted,then the alarm relay will not de-activate auto-matically once all active points drop below thealarm setpoint. The relay will only de-acti-vate once the reset button is pressed.

Sensor Failure:

If the TGM4 loses communications with oneor more sensors, or if one or more sensorsfail, the sensor OK LED will turn off and thesensor fail relay will activate. If an analogsensor is used and the input is between 1 mAand 3 mA, the sensor OK LED will turn offand the sensor fail relay will activate. Anyanalog input below 1 mA causes the TGM4to ignore that analog input and treat that sen-sor as an RS-485 type sensor.

Section 4Start-Up Procedure for TGM4

(A = Remote Sensor(s) B = TGM4 Monitor)

Loosen the locking screws on front cover to open door. Check wiring and locatethe power switch on main circuit board inside enclosure.

Loosen the locking screws on front cover and open the sensor. Check wiring.

Binary Coded Jumper on H1-1 is properly inserted to reflect number of remotesensor(s) connected to TGM4 Monitor.

Binary Coded Jumper on H1-1 is properly inserted to address each individualsensor. (If RS-485, 4-wire connection to TGM4 Monitor).

Turn power ON.

Green LED (POWER) Indicator on front panel should be ON.

Green LED (Sensor OK) Indicator on front panel should be ON.

Red LED (SENSOR FAIL) Indicator on front panel should be OFF.

Amber LED (WARNING) Indicator on front panel should be OFF.

Red LED (ALARM) Indicator on front panel should be OFF.

Note: Warning LED and Alarm LED may come on during initial power up. If audiblealarm sounds, press RESET button to silence.

IMPORTANT:

Allow the gas monitor and sensor** to stabilize.

* Applicable only to MSA UNTGS Sensor/Transmitter.

** Refer to Sensor/Transmitter manual for stabilization time.

A B

*

*

*

*

*

TGM4 Section 4Gas Monitor Start-Up Procedure

4 - 1

TGM4 Section 4Gas Monitor Start-Up Procedure

4 - 2

A

*

The MSA TGM4 Monitor allows for field adjustment from factory settings. Please refer toSection 2 of this manual to change settings in order to meet the required sequence ofoperation.

*

*

B (A = Remote Sensor(s) B = TGM4 Monitor)

Ensure that delay function selection jumper on main circuit board is NOT inserted.

Insert Test Jumper to 100% test position. Red LED (SENSOR FAIL), Amber LED(WARNING), Red LED (ALARM) on the Remote Sensor shall come on. (See Note 1).

The audible horn sounds, Amber LED (WARNING) and Red LED (ALARM) on TGM4Monitor shall also come on. (Press the RESET BUTTON to silence horn).

Note: Warning and Alarm Relays are now energized. Any remote equipment whichmay be connected to the associated relay contacts should now be activated.

Note: TGM4 Monitor is factory preset as follows:

WARNING Level: 35% of Full ScaleALARM Level: 50% of Full ScaleAudible Signal: Comes on at ALARM levelDelay Function: No Delay (jumper not inserted)

Remove Test Jumper from 100% test position.

Repeat this alarm simulation test on other sensor(s) if needed.

The initial function test and start-up is now completed.Close front door and sensor cover and secure locking screws.

Note 1: Remote Sensor, other than MSA UNTGS Series Sensor, must usecalibration check gas to simulate alarm condition.

* Applicable only to MSA UNTGS Sensor/Transmitter.

Calibration Log

TGM4 Section 4Gas Monitor Calibration Log

4 - 3

DATE READING RESET DATE READING RESET

Calibration Log

TGM4 Section 4Gas Monitor Calibration Log

4 - 4

DATE READING RESET DATE READING RESET

Parts ListMSA TGM4 Monitor

Use only genuine MSA replacement parts when performing any maintenance onthe TGM4 Monitor. Failure to do so may seriously impair instrument performance.Repair or alteration of the TGM4 Series Monitor beyond the scope of the instructionmanual could cause the product to fail to perform as designed.

Disconnect all power source(s) to the TGM4 before removing or changing any com-ponents.

TGM4 Section 4Gas Monitor Parts List

4 - 5

Item

TGM4 Mother Board (110 Vac Version)TGM4 Display Board (w/o Display)TGM4 Display Board (w/ Display)Ribbon Cable Assembly

MSA Part No.

213115 213116 213117 213118

* When ordering replacement parts, Please state MSA’s P/N and S/N of unit.

5 - 1

TGM4 Section 5Gas Monitor Figure 1

Section 5Figure 1: TGM4 Enclosure Drawing

5 - 2

TGM4 Section 5Gas Monitor Figure 2

Section 5Figure 2: Field Layout Drawing

TGM4 Section 5Gas Monitor Figure 3

5 - 3

Section 5Figure 3: TGM4 Panel/Layout Connection

TGM4 Section 5Gas Monitor Figure 4

5 - 4

Section 5Figure 4: Field RS-485 Serial Communication

TGM4 Section 5Gas Monitor Figure 5

5 - 5

Section 5Figure 5: 4-20 mA Analog Communication

TGM4 Section 5Gas Monitor Figure 6

5 - 6

Section 5Figure 6: 4-20 mA Sensor Wiring

Section 6

CSA Certification

Certificate of Compliance No. LR 51078-5

FCC Compliance

This device complies with Part 15 of the FCCRules. Operation is subject to the following twoconditions:

1. Device may not cause harmfulinterference.

2. Device must accept any interferencereceived, including interference thatmay cause undesired operation.

NOTE

This equipment has been tested and found tocomply with the limits for a Class A digitaldevice, pursuant to Part 15 of the FCC Rules.These limits are designed to provide reasonableprotection against harmful interference when theequipment is operated in a commercialenvironment. This equipment generates, usesand can radiate radio frequency energy and, ifnot installed and used in accordance with theinstruction manual, may cause harmfulinterference to radio communications.Operation of this equipment in a residential areais likely to cause harmful interference, in whichcase the user will be required to correct theinterference at his or her own expense.

Changes or modifications not expresslyapproved by the party responsible forcompliance could void the user’s authority tooperate this equipment.

TGM4 Section 6Gas Monitor CSA Certification & FCC Compliance

6 - 1

TGM4 Appendix AGas Monitor Figure 7A

A - 1

Appendix AFigure 7A: Troubleshooting Guide for TGM4

TGM4 Appendix AGas Monitor Figure 7B

A - 2

Appendix AFigure 7B: Troubleshooting Guide for TGM4

TGM4 Appendix AGas Monitor Figure 7C

A - 3

Appendix AFigure 7C: Troubleshooting Guide for TGM4

TGM4 Appendix AGas Monitor Figure 7D

A - 4

Appendix AFigure 7D: Troubleshooting Guide for TGM4

Manufactured by

Call Toll Free @ 1 (800) 267 0672

MSA Canada Inc.TORONTO, ONTARIO, CANADA M3N 1X8