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Flow Sample Systems
GDS 304
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GDS304
C651
(Sequential Gas Sampling System 1-48 Way)


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1-48 sample points
Monitor up to 4 gas types
Full indication of all operations
4 line alpha/numeric display
Line blockage and pump fail monitoring
Variable sample time for optimum cycle time
Selectable sample line sequence
No sample line purge delay
High integrity, comprehensive self check fault
monitoring
Easily installed and maintained
Centralised one man calibration offers
minimum running costs
Event logging / Modbus / RS232 / RS485
Display of each sample line location
Split system operation – optional
Line blockage, blow back – optional
Hazardous area operation – optional
Enclosure internal gas monitoring with automatic system shutdown – optional
Remote repeater panel – optional
LED/text indicator panel – optional
Auto flood cut off – optional
GDS300 Sequential Gas Sampling System Multi Way




The GDS 304 system is designed to monitor gas levels from a number of sample-points, targeted at situations where the positioning of conventional gas sensors may not be practical.
This may be due to equipment security, cable routing, access for detector head installation/maintenance, harsh environment or a cost effective means of monitoring designated hazardous areas, typically - tunnels, marine applications, underground/high level voids, process control, landfill, multi storey car parks, brewing, horticulture, livestock husbandry.




Gas samples are sequentially extracted for a timed period by a central control unit via fixed sample lines. A high rate sample is taken by the main pump during which a reduced rate sample is passed across the sensor device.

The central unit provides gas level readouts with two alarm trip points per line, providing a range of signal outputs for annunciator and control functions.
 

 

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