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GDS - Model 306 -Sequential Gas Sampling System 1-20 Way
The GDS 306 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, retail.
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.
- Sensor Points : 1-20
- Sensors :
- 2 - standard
- 1~4 Option
- Measurements :
- Combustible gas L.E.L. % Vol
- Toxic gas P.P.M. % Vol
- Oxygen - % Vol
- Refrigerant-ppm
- Depletion/enrichment
- Power Supply : 230/115v AC 50/60 Hz
- LED Indicators :
- System healthy
- Main power
- Standby power
- High gas alarm
- Low gas alarm
- System, flow, sensor fail
- Comms fail
- Skip/hold
- Sampling
- Display : 4 line alpha/numeric indicates all functions and status in text. Sample line locations (user settable)
- User interface :
- 8 panel mounted push buttons:- Reset, Scroll, Hold, Dim, Enter, Down, Up, Select
- PC – event log / data log, data to and from system controls
- Relay Outputs :
- Global Low S.P.C.O.
- Global High S.P.C.O.
- Global Fault S.P.C.O.
- Flow Fail S.P.C.O.
- Power Fail S.P.C.O.
- Cabinet Sensor S.P.C.O.
- 32 programmable relays Additional 32 optional
- Communication :
- RS232– Data Stream
- Modbus 2 x RS485
- Can bus – internal
- General :
- Audible alarm all alarm conditions
- LED/display dimming
- User/Eng password
- LCD backlight
- Event logging
- Sample line size 6mm OD 4mm ID
- Nylon, PTFE, Copper, Stainless Steel. Max length 100m specials 100m+
- Sample vent x 2-8mm
- Tubing entry enclosure base
- Response time 15 to 45 seconds
- Colour- powder coat ash grey BSA01
- Size 400H x 450W x 200D
- IP 63
- Wall mount
- Standards :
- EN60945: 2002 Maritime general requirements
- EN61010: 2001 Electrical Safety - LVD