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GasSens

 Gas Detection System 

 

Section 1 - Overview

 

O & M Manual 
A14-RK, 8/06 

 

1 - 10 

 

 

 
 

 Figure 1-4:  Six Module System Enclosure Dimensions (80-0008R) 

Summary of Contents for GasSens

Page 1: ...ogy Inc ATI UK Limited 6 Iron Bridge Drive Unit 1 2 Gatehead Business Park Collegeville PA 19426 Delph New Road Delph Phone 800 959 0299 Saddleworth OL3 5DE 610 917 0991 Phone 44 0 1457 873 318 Fax 61...

Page 2: ...Y CONFIGURATION 2 3 CONFIGURATION SWITCHES 2 3 SETPOINT SELECTION 2 5 RANGE SELECTION 2 6 RELAY CONFIGURATION 2 6 EXTERNAL HORN RELAY 2 7 DISPLAY INTENSITY 2 7 OPERATION 2 8 STARTUP 2 8 ALARM ACKNOWLE...

Page 3: ...GasSens Gas Detection System Section 1 Overview O M Manual A14 RK 8 06 1 2 BATTERY BACKUP PARTS LIST 4 3 STROBE PARTS LIST 4 3 STROBE LIGHT 4 3...

Page 4: ...ine Dioxide 12 0 2 PPM 0 1 PPM 0 100 PPM Fluorine 13 0 2 PPM 0 1 PPM 0 100 PPM Hydrogen Peroxide 34 0 10 PPM 0 10 PPM 0 100 PPM Ozone 14 0 2 PPM 0 1 PPM 0 100 PPM Iodine 35 0 2 PPM 0 1 PPM 0 100 PPM A...

Page 5: ...isual indication of alarm status A17 Power Supply Module Provides 12 VDC power to one or two receiver modules plus power for an audible horn and for charging an external battery Packaged in the same c...

Page 6: ...odule Mounting is by 1 2 MNPT nipple making it convenient to mount directly to a NEMA enclosure A19 Battery Back up Provides a 12 VDC 4 AH battery and charging control circuitry in a separate NEMA 4X...

Page 7: ...ngs of the one two three and six module enclosures Each enclosure is supplied with conduit hubs for connection of 1 2 NPT threaded conduit Also included is a seal ring for each hub Seal rings are requ...

Page 8: ...ic cable glands are available from most electrical supply stores Gland seals with 1 2 NPT threads will screw directly into the conduit hub Gland seals are also available from ATI for installation dire...

Page 9: ...ns Gas Detection System Section 1 Overview O M Manual A14 RK 8 06 1 8 THRU HOLES FOR SURFACE MOUNTING 4 6 SCREWS SIDE VIEW FRONT VIEW BOTTOM VIEW Figure 1 2 Two Module System Enclosure Dimensions 80 0...

Page 10: ...s Gas Detection System Section 1 Overview O M Manual A14 RK 8 06 1 9 THRU HOLES FOR SURFACE MOUNTING 4 6 SCREWS SIDE VIEW FRONT VIEW BOTTOM VIEW Figure 1 3 Three Module System Enclosure Dimensions 80...

Page 11: ...GasSens Gas Detection System Section 1 Overview O M Manual A14 RK 8 06 1 10 Figure 1 4 Six Module System Enclosure Dimensions 80 0008R...

Page 12: ...quired Single point detection systems are supplied with the power supply receiver and optional horn factory wired as shown in Figure 1 5 below Analytical Technology Inc Figure 1 5 Single Point Receive...

Page 13: ...iew O M Manual A14 RK 8 06 1 12 Two point detectors include one power supply and two receivers These systems are shipped factory wired as shown in Figure 1 6 below Analytical Technology Inc Figure 1 6...

Page 14: ...GasSens Gas Detection System Section 1 Overview O M Manual A14 RK 8 06 1 13 Analytical Technology Inc Analytical Technology Inc Figure 1 7 Four Point Receiver Internal Wiring ATI 075...

Page 15: ...ems supplied in Large type enclosures use a 65 watt power supply located in the top of the enclosure This power supply is designed to power up to 12 of the A14 receiver modules Figure 1 8 shows typica...

Page 16: ...connected properly Sensor transmitters supplied with the generator from the factory will be factory wired Adding a generator to an existing unit requires the installer to be sure that generator wiring...

Page 17: ...s require no adjustments Receiver modules are factory set to the range specified on the order and alarm setpoints will be set to default values unless otherwise specified on the order Sensor transmitt...

Page 18: ...TROUBLE alarm is activated 3 Isolated 4 20 mA output signal proportional to gas concentration 4 Isolated remote reset input terminals for remote alarm acknowledgment 5 Power for operation of an A11 s...

Page 19: ...TROUBLE NC trouble normally closed contact 11 TR Transmitter Input 11 TROUBLE C Trouble common 12 TR Transmitter Input 12 TROUBLE NO Trouble normally open contact NOTE Relay contact designation is sho...

Page 20: ...l latching operation Relay 3 Configured to trip at the Alarm setpoint and set for normal latching operation Alarm Delay Configured for 2 second delay Warning and Alarm setpoints are factory set to sta...

Page 21: ...GasSens Gas Detection System Section 2 A14 Receiver Module O M Manual A14 RK 8 06 2 4 Figure 2 4 Configuration Switch Functions 0110PM...

Page 22: ...01 37 0100101 69 1000101 6 0000110 38 0100110 70 1000110 7 0000111 39 0100111 71 1000111 8 0001000 40 0101000 72 1001000 9 0001001 41 0101001 73 1001001 10 0001010 42 0101010 74 1001010 11 0001011 43...

Page 23: ...et to actuate when the gas concentration either goes above or falls below the setpoint Most gas leak detection applications require alarms to activate above a specific setpoint but alarms for oxygen d...

Page 24: ...y may be selected if required in a specific application The delay time of either 2 or 10 seconds affects both the warning and alarm indicator lamps and the associated relays External Horn Relay Relay...

Page 25: ...lly the display will spike when power first comes on and will slowly recover to zero over the 5 minute period in which alarms are inhibited NOTE Sensors may require up to 12 hours to stabilize after p...

Page 26: ...manpower normally required for routine testing Auto Test is an electrochemical gas generator fixed to the gas sensor and controlled from the receiver Every 24 hours the receiver automatically activate...

Page 27: ...test press and hold the A R button for 2 seconds and all front panel indicators will light The horn will also sound briefly Immediately release the button and the indicators will return to normal Dur...

Page 28: ...e unsuccessful the TROUBLE lamp will light and the alarm relay and horn will activate Pressing the A R button will silence the horn but the alarm cannot be reset for at least 10 minutes after a failur...

Page 29: ...to a failure of the generator If proper sensor operation has been verified the automatic daily activation of the test function can be bypassed until a replacement generator has been installed To deac...

Page 30: ...correctly but does not respond when test gas is applied to sensor transmitter 1 Disconnect transmitter connections at terminals 11 and 12 of TB1 Check the voltage on the terminals with a voltmeter Th...

Page 31: ...ONT PANEL 34 0009 PLUG ON TERMINAL BLOCK 38 0006 TOP HALF OF ENCLOSURE 80 0002 PC BOARD ASSEMLBY BOTTOM HALF OF ENCLOSURE 80 0002 Part Number Description 00 0056 Complete receiver module Specify Gas 8...

Page 32: ...draw approximately 400 mA when activated The power supply is internally fused at 2 Amps The fuse is not user replaceable Note Only Qualified Service Personnel will replace the fuse using the same typ...

Page 33: ...eceiver Module 1 12 Receiver Module 2 C External Battery 2 C Receiver Module Common 2 C Receiver Module Common 3 Earth Ground 3 Earth Ground 3 Earth Ground TB4 TB5 1 L AC power hot 85 255 VAC 1 NC Pow...

Page 34: ...4 RK 8 06 3 3 POWER SUPPLY PARTS LIST Part Number Description 00 0055 Complete power supply module 81 0064 Module enclosure top and bottom 34 0011 Front overlay 38 0065 AC power terminal block plug 3...

Page 35: ...ery back up unit and the mounting hole centers Two conduit hubs are supplied with the unit one for use on the battery back up enclosure and one for use on the receiver enclosure When mounting the batt...

Page 36: ...the charging current to the battery to a maximum of 0 75 amps This prevents possible damage to the battery due to an excessively high charge current Second it isolates the battery from the detection...

Page 37: ...circuit board 80 0009 NEMA 4X enclosure top and bottom 48 0010 Battery bracket 29 0002 Battery 12 V 4 A H 92 0022 Self tapping screws Pkg Of 2 44 0017 Pg 16 to 1 2 NPT conduit hub 44 0018 Pg 16 Seal R...

Page 38: ...ires to the interconnect wiring running to the alarm unit This wiring should be kept separate from AC power wiring to avoid accidental connection of AC power to the strobe which will damage the lamp T...

Page 39: ...e mounted using screws or bolts as required Figure 5 1 provides the dimensions for both the standard and explosion proof transmitters Standard enclosures will accommodate 6 or 8 screws which are not s...

Page 40: ...15 5 2 Notes 1 Enclosure Ratings Nema 4X IP 66 2 Enclosure Material Polystyrene standard gray 3 Knockouts Pg 11 75 dia Pg 16 90 dia 4 These are the dimensions between knockouts and are typical for 3...

Page 41: ...GasSens Gas Detection System Section 5 A11 10 Br2 Sensor Transmitter O M Manual Revision E 10 15 5 3 Figure 5 2 Explosion Proof Sensor Transmitter Dimensions ATI 046 ATI 0170...

Page 42: ...nsmitter uses an electrochemical sensor manufactured by ATI It is designed to measure Br2 gas concentration in air with a maximum of sensitivity and a minimum of interference from other gases Unfortun...

Page 43: ...linder chlorine standards are available but should be used with caution Low concentrations of chlorine have not proven to be stable in a cylinder over extended periods of time NOTE If alarm relays at...

Page 44: ...he DVM reading for the next 5 minutes If bromine or some interfering gas is present in the ambient air the value on the DVM will begin to decline If the value remains stable 0 02 the sensor is at zero...

Page 45: ...ENSOR RESPONSE TEST While zero and span adjustments are required only periodically gas sensors should be checked regularly for proper response For systems not equipped with Auto Test manual sensor res...

Page 46: ...sensor to completely stabilize Then perform a zero and span as described on pages 4 and 5 GENERATOR REPLACEMENT Auto Test gas generators are warranted for 12 months and will generally last for 24 mon...

Page 47: ...sensor transmitter assembly including sensor 00 0002 Bromine gas sensor 00 0097 Chlorine gas generator with gland seal used to Auto Test Br2 systems 01 0018 Transmitter circuit board 80 0012 NEMA 4X e...

Page 48: ...improper storage or extended exposure to excessive gas concentrations Should inspection indicate that sensors have failed due to any of the above the warranty shall not apply The Manufacturer assumes...

Page 49: ...DUCTS NH3 Ammonia CO Carbon Monoxide H2 Hydrogen NO Nitric Oxide O2 Oxygen CO Cl2 Phosgene Br2 Bromine Cl2 Chlorine ClO2 Chlorine Dioxide F2 Fluorine I2 Iodine HX Acid Gases C2H4O Ethylene Oxide C2H6O...

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