gas detection unit for ammunition deposits technical ...€¦ · technical specification revision...

RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101

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GAS DETECTION UNIT

FOR AMMUNITION DEPOSITS

TECHNICAL SPECIFICATION

revision 01

Doc: 1004400S00.1 SA rev.01 of 01/03/2016

APPROVALS

PREPARED Stefano Arthemalle Data: 17/12/2016

Luca Betrò

-------------------------------------------------------------

VERIFIED: Stefano Arthemalle Data 17/12/2015

Sergio D’Alesio

------------------------------------------------------------

APPROVED Cesare Repetto Data 17/12/2015


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INDEX OF REVISIONS

Revision Date Description

00 17/12/2016 FIRST ISSUE

01 01/03/2016 REPLACED CO IR SENSOR WITH ELECTROCHEMICAL SENSOR


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GENERAL INDEX

1. INTRODUCTION ...................................................................................................... 4

2. DESCRIPTION CENTRAL ....................................................................................... .4

2.1. LAYOUT PANEL .......................................................................................... 5

2.2. FEATURES ANALYZER ............................................................ .. ... .5

3. CONNECTIONS CONNECTIONS .............................................................................. .7

3.1. EXTERNAL INTERFACE TO AUTOMATION ................................................... 7

4. LOGIC ALARMS ................................................................................................... .8

4.1. GAS DETECTION ALARM ........................................................................... ..8

4.2. FAULT DETECTION PUMP ........................................................................... ..9

4.3. SENSOR FAULT DETECTION ........................................................................ .9

5. DISPLAY USER ................................................................................................... .10

6. INSTALLATION ON BOARD .................................................................................... 11


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1 INTRODUCTION

The central gas detection "GAS SCREEN 160" is an analysis device that measures the presence of CO, CO2

and N2O into the atmosphere.

The analyzer is equipped with a suction pump, three specific sensors for each gas and of a data processing

system connected to a touch-screen display arranged in the door as shown in fig. 1

2 DESCRIPTION

The cabinet that houses the above mentioned center has the following characteristics:

- Cabinet Rittal 500x500x210 painted sheet and with door opening

- 7035 RAL Color

- Degree of protection: IP66

- Screen-printed front panel aluminum with Logo Martec + Logo RECOM


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fig.1

2.1PANEL LAYOUT

The layout of the front panel part is arranged on two functional sections described below. The right panel

section is dedicated to the multi-function touch display where the operator can access the details of the

operation information / detection of the center and to the setting of the same functions. The left section of

the panel, however it is organized to summarize the basic information of the center also with touch display

and then out of service is based on hardware components such as lamps and buttons. For that section has

been selected a solution to the membrane panel and LED.

RIGHT PANEL SECTION

- Display touch 7” a colori

- N.1 led di colore verde per Sistema “ON”

LEFT PANEL SECTION

- No. 3 red LEDs for gas alarm (CO, CO2, N2O)

- No. 2 yellow LEDs respectively for "FAULT Pump" and "FAULT Sensors"

- No. 1 in membrane button for ACK / Alarm Silence and fault associated with LED yellow

- No. 1 in membrane button for LED test


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2.2 Analyzer Features

Fig2

- Central GasScreen 160 with integrated optical acoustic alarm code 1004400 - Diaphragm vacuum pump 1 liter / min code 1004010

- Dust filter Teflon - Digital Flowmeter SMC code PFM07

- Inlet and outlet quick connect teflon tube 6x4mm - External optical acoustic alarm code 1003610

- Human Machine Interface: VAR-AM33CustomBoard populated with VAR-SOM-AM33 7 "LCD + resistive

touch panel; code VAR-AM33 IR sensors Recom NovaGas2

- Measuring cell: coating inside Stainless steel corrosion - Detection Method: Dual Channel Non-Dispersive InfraRed (NDIR)

- Response time (T90): 15/2

- Temperature: 0 ° C to 50 ° C - Humidity: 0-95% RH

- Pressure: 800-1150hPa - Output: 4-20mA / IO / UART interface

- Power supply: 9-24V DC - Resolution: 1.5 ppm


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RANGE

N2O 0-2000 ppm code 1003000.2

CO2 0-5000 ppm/5%Vol/10%Vol code 1003000

Recom elettro-chemical sensor

- Operating Principle: 3-electrode electrochemical - Sensitivity: 0.10 ± 0.02 uA / ppm

- Response time (T90): <25 seconds at 20 ° C - Zero Shift (-20 ° C to + 40 ° C): <9 ppm equivalent

- Repeatability: 1% of the signal

- Linearity: Linear - Temperature: 0 ° C to 50 ° C

- Humidity: 0-95% RH - Pressure: 800-1150hPa

- Output: 4-20mA / IO / UART interface - Power supply: 12-24V DC

CO 0-2000 ppm code 1001780

3 CONNECTIONS - The cabinet described above has the following fluidic connections (gas) and electrical / signals

(fig3):

- - Side Gas: quick-fit connectors on both inlet and outlet

- Fitting Electric / signals: connectors on the electrical supply cables and on the signals + connector for

connection with optical-acoustic panel.

This approach allows to facilitate the maintenance operations and in case of need, to release rapidly

throughout the cabinet from its fluidic and electrical interfaces and replace the module with a new central

possibly available as spare.


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Fig3

3.1 INTERFACES

In order to ensure the monitoring of alarms and fault by the SISS, the system in question must be interfaced

via hardwired with the automation system which in turn will transfer that information to the SISS by means

of software interface.

The central, through the 37-pin connector is connected to a terminal board (fig4) where the following

signals are shown:

- n° 3 of 4-20mA signals for the value of gas concentration in ppm Ranked # 3 CE NO contacts for

gas alarm. (1,2,3,4,5,6 terminals)

- n° 3 of CE NO contacts fault / alarm sensors (7,8,9,10,11,12 terminals)

- n° 1 of 1 EC general NO contacts general fault (terminals 13,14)

- n° 1 of low-flow pump alarm contact (terminals 15,16)

- n° 1 of NO contact for ACK / Acknowledge alarm (terminals 17,18)

- N°.1 voltage output 5Vdc for signaling during plant operation (terminals 19,20)

4 alarm logic - Gas Detection Alarm

- Fault detection pump

- Sensor fault detection

The following describes the logic for each case.

4.1 Detection alert GAS 1. Following the gas detection alarm for exceeding set thresholds in the central GasScreen 160:

a. Activation optical-acoustic panel installed above the storage room


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b. red led ignition relative to the corresponding gas

c. Change the color bar graph display with the same red

d. yellow LED at the ACK / Silence button lights up during activation of the same button

Recognition / acknowledgment alarm with ACK / Silence button and maintenance of the optical

alarm state for the alarm and the red LED bar graph, until the return of the sub-alarm threshold

value. After silencing the yellow LED turns off.

2. At the back of the value detected below the alarm threshold:

a. Automatic red gas alarm LED goes off

b. Automatic restoration of the normal bar graph was on the color display

4.2 Fault detection pump

1. Following the fault detection pump (occurs due to lack or low flow through signal 4 ... 20 mA sent to the

central GasScreen 160 from the digital flow switch with color display PFM 7)

a. Alarm activation unit

b. Turning on yellow lamp of "pump fault"

c. Change color bar graph pump (l / min) with the same color of the logical thresholds of

gas

d. yellow LED at the ACK / Silence button lights up during activation of the same button

2. Recognition / acknowledgment alarm with ACK and maintenance of the optical alarm status of the yellow

lamp fault and bar charts to clear this fault. After silencing the yellow LED turns off.

3. Returning to the Default condition:

a. automatic shutdown of the alarm yellow lamp fault


4.3 Fault detection sensor

1. Following the sensor fault detection:

a. Alarm activation unit

b. Turning on yellow lamp "fault sensor"

c. Color change to yellow bar graph sensor below the minimum threshold

d. yellow LED at the ACK / Tacitaz ion button lights during activation of the same button

2. Recognition / acknowledgment alarm with ACK and maintenance of the optical alarm status of the

yellow lamp fault and bar charts to clear this fault.


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3. Returning to the Default condition:

a. automatic shutdown of the alarm yellow lamp fault


5 User display

The display installed on the right section of the front panel of the central cabinet, consists of a touch monitor

7-inch color. The man-machine interface structure (fig5) consists of the following elements:

The main display Default page contains the following information:

- No.4 bargraph, 1 for each of the three gases with the gas concentration detected in the

display (ppm) and 1 for the display of the pump capacity (l / min)

- Navigation buttons

From the functional point of view, the touch on each of 4 bar graphs, generates the opening of the

corresponding detail page with the following information:

Value measured in ppm or l / min and in mA.

Display alarm thresholds / fault

From each of these pages of detail you can open a window of setting the alarm thresholds by means of

access for maintenance operator password


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Fig5

6 INSTALLATION ON BOARD The central and the optical / acoustic signal will be fixed to the wall in the deposit matching ammunition to

be monitored.

• It must be connected to a 220Vac power privileged. • The local flow analysis will be done through two bulkhead passages for pipe diameter 6 mm which will

connect the outlets of the intake and exhaust analyzer • All external connections of the center will be made in Jbox connected to it through the connector (fig6)


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Fig4

gas detection unit for ammunition deposits technical ...€¦ · technical specification revision...

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