GDS - Model 302 -Single Point Short Line Sample Unit

The GDS 302 system is designed to monitor gas levels in 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, brewing, horticulture, livestock husbandry.

A gas sample is continuously extracted via a fixed sample line from the target area. The central unit provides gas level readouts with two alarm trip points, providing a range of signal outputs for annunciator or control functions.

• Measurements :Combustible Gas L.E.L %Vol, ppm, Toxic Gas - ppm, %Vol, Oxygen % Vol
• Power Supply : 230/115vAC or 24vDC ± 15%, The two voltages may be used simultaneously
• Frequency : 50/60Hz
• Consumption : 10 watts
• Alarm Settings : Digital setting (fully adjustable between zero and full scale)
• Alarm delay : T1 - 10 seconds, T2 - 30 seconds, T1 + T2 - 10 minutes
• Outputs :
• Low alarm relay - S.P.C.O
• High alarm relay - S.P.C.O
• Fault alarm relay - S.P.C.O
• Relays rated 5A/230vAC
• ND or NE pre set normally de energised
• Analogue 4-20mA/1-5v
• Indicators :
• Power - Green L.E.D.
• Alarms - Low/High - Red L.E.D.
• Fault - Amber L.E.D.
• System test alarm L.E.D’s flashing
• Audible Alarm : Low, High gas and Fault Permanent mute option
• Reset Switch : Auto or Manual - pre set manual
• Test Switch : Used to check alarm indicators, sounder and relay action
• Inhibit : Isolation of alarm relays during service
• Protection : IP65
• Environmental :
• Ambient temperature -5 to 45°C
• Storage temperature +10 to 60°C
• Humidity range 0 - 90 RH
• Cable Entry : Rear, side, top, bottom
• Sample Tube :
• 6mm OD 4mm ID
• Max. length 6m
• Miscellaneous :
• Dimensions 240H 200W 60D
• Weight 1.1kg
• Cable entry - bottom, sides, rear