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E:

[email protected]

T:

0113 286 0166

F:

0113 287 8178

GDS TECHNOLOGIES LTD

|

FUSION POINT

|

ASH LANE

|

GARFORTH

|

LEEDS

|

LS25 2GA

|

UK

www.gds-technologies.co.uk

This document is not contractual and the equipment specifi cation may be modifi ed at any time without prior notice.

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Содержание 2000

Страница 1: ...ES LTD FUSION POINT ASH LANE GARFORTH LEEDS LS25 2GA UK www gds technologies co uk This document is not contractual and the equipment specification may be modified at any time without prior notice GDS2000 MODULAR GAS ALARM OPERATING HANDBOOK C927 Manual No PCN002 13 Issue C v 2 ...

Страница 2: ...out 15 3 Alarm and Facilities Card terminal connections 16 4 Sensor Connections 17 COPYRIGHT All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior permission of GDS Technologies Ltd This document is not contractual and the specification may...

Страница 3: ...ply and sensor this unit becomes a single channel monitor being fully equipped with a Meter to indicate concentration of gas b Power ON indicator c Alarm 1 and alarm 2 indicators Low and High latched or unlatched option d Fault indicator e Overrange indicator Alarm 3 indicator f Alarm sounder g Alarm relays or Alarm signals h Analogue output signal 4 20mA optional 1 5v i Alarm Accept and Reset swi...

Страница 4: ...odule removed sounder alarm TERMINAL MOTHER BOARD Houses the field terminals for the connection of external equipment i e sensor shut off valves mimic panels etc Also in multi channel systems is used to connect the various alarm and facilities cards together INSTRUMENT ENCLOSURE A standard 19 wide rack houses up to 14 cards various types of enclosure being available to suit the users requirements ...

Страница 5: ...ared ALARM INHIBIT DELAY From the application of power a period of 20 seconds applies during which alarm relays and indicators are held in the normal operating condition inhibited This period is indicated by the Power ON indicator flashing green and red ALARM RELAY INHIBIT Push switch Used to inhibit alarm relays during maintenance period Indication Power ON indicator normally green changes to red...

Страница 6: ...n 4 20mA 3 core 0 5mm screened M I C C S W A maximum cable loop resistance 200 ohms TERMINALS Screw type accepting up to 2 5mm cable RELAY OUTPUTS ALARM CARD Alarm Low S P C O N D Alarm High S P C O N D Fault Alarm S P C O N E FACILITIES CARD Common Alarm LowS P C O N D Common Alarm High S P C O N D Fault Alarm S P C O N E Overrange Alarm S P C O N D All contacts rated at 5A 230v AC ENVIRONMENTAL ...

Страница 7: ...lighter than air gas such as methane leaking from a small orifice at ground level will rise in a plume the shape of which approximates an inverted cone As the gas rises it draws air from the surroundings and creates a turbulence Resulting from this there occurs rapid dilution and unless a sensor is positioned within the plume there will be no initial indication of a leak As gas continues to escape...

Страница 8: ...xamples of such substances are a Silicon containing vapours as emitted by silicone polishes greases and oils b Petroleum vapours containing tetra ethyl lead or other organo metallic compounds c Phosphorus in the form of phosphate esters These compounds will permanently affect the detector and if their presence is suspected the response of the detector should be determined by the calibration proced...

Страница 9: ...at the level stated on the instrument test certificate To adjust the gas alarm level Adjust the Zero Alarm Potentiometer so that the meter indicates the desired alarm level Adjust the Alarm Potentiometer until the alarm is initiated The Sounder will sound and the Alarm Lamp will illuminate Accept the alarm by pressing the Reset Switch Adjust the Zero Potentiometer so that the Meter reads Zero Rese...

Страница 10: ...indicator may lluminate due to the low charge state of the battery SERVICE ROUTINE ATTENTION The owner or occupier of the premises should place the supervision of the system in the charge of a responsible executive whose duty it should be to ensure the day to day operation of the system and to lay down the procedure for dealing with a gas alarm or fault warning To ensure reliability an agreement s...

Страница 11: ...tected ACTION TO BE TAKEN IF THE APPARATUS ALARM SOUNDS A Extinguish all naked flames including all smoking materials B Turn off all gas appliances C Do not switch on or off any electrical lights or appliances D Turn off the gas supply at the gas emergency control and or with L P G supply the storage tank E Open doors and windows to increase ventilation If the alarm continues to operate even after...

Страница 12: ...ies co uk T E C H N O L O G I E S FAX BACK SHEET SERVICE MAINTENANCE PLAN GDS Technologies can offer comprehensive maintenance service cover on all of your gas detection systems Should you require further details please complete and fax return this document for an immediate response Company Name Company Address Tel No Fax No Site Location if different from above Contact Name Product Type if known ...

Страница 13: ... n Butane 1 5 Carbon monoxide 12 5 Ethylene 2 7 Heptane 1 1 Hexane 1 2 Hydrogen 4 0 Methane 5 0 Propane 2 0 Pentane 1 4 Toluene 1 2 Xylene 1 0 TABLE OF OCCUPATIONAL EXPOSURE LIMITS P P M The figures quoted below are taken from guidance note EH40 from the Health and Safety Executive GAS 8 HOUR T W A P P M Hydrogen sulphide 10 Carbon monoxide 30 Sulphur dioxide 2 Nitrogen monoxide 25 Nitrogen dioxid...

Страница 14: ... Fault Reset On High Low Fault GDS O R Facilities Card Reset On High Low Fault GDS Fire Alarm Card Reset On Fault Fire GDS Standby Battery Charger Card HALF RACK FULL RACK Mains On Fail Charge Fail High Low Batt MODULE DETAIL a b 19 RACK DETAIL Front Plan 132mm 210mm 232mm 6E 30mm 445mm 482mm 270mm 3U 129mm 8 8 8 8 Fig 1 ...

Страница 15: ...mA output link 2 3 factory set Y 24V DC sensor supply 4 20mA transmitters link 1 2 X Adjustable sensor supply pellistor only link 2 3 1 2 3 1 2 3 1 2 3 4 Jumper Terminals E High common relay normally energised link 1 2 D High common relay normally de energised link 2 3 Factory set normally de energised E Low common relay normally energised link 1 2 D Low common relay normally energised link 2 3 Fa...

Страница 16: ...nsor mv P N O C A1 Low Alarm Relay N C Anal O P Anal O P N O C Fault Relay N C N O C A2 High Alarm Relay N C N O C Over Range Alarm Relay N C N O C A1 Low Alarm Relay N C N O C Fault Relay N C Alarm Module V W X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Y Z Common Remote Acc Reset Lamp Flash Sync Facilities Module Battery Battery V W X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Y Z Stand by Battery Modul...

Страница 17: ...ol Unit Detector Head mV pellistors or 3 wire CV W Y P W Y SIG P E Gas Detector Control Unit CV Transmitter Gas Detector Control Unit Transmitter W Y P 24V OV SIG Sensor Sensor Sensor RED ident R flammable YELLOW ident Y toxic BLUE ident B oxygen GREEN ident G others TOXIC SENSOR OXYGEN P W Y P Y ...

Страница 18: ...113 286 0166 F 0113 287 8178 GDS TECHNOLOGIES LTD FUSION POINT ASH LANE GARFORTH LEEDS LS25 2GA UK www gds technologies co uk This document is not contractual and the equipment specification may be modified at any time without prior notice ...

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