Gasmonitor Plus



Simple to use

  • All day-to-day functions are available from the front panel – push buttons for simple operation
  • Unique bar-graph display per channel – provides instant representation of gas concentrations
  • Common alarm LEDs on the display card – the whole rack status can be checked at a glance.

Flexible architecture

  • System is limitlessly expandable
  • Modular construction – ultimate customisation and minimal wiring
  • Industry-standard analogue outputs – will integrate fully with existing rack-mounted protection systems on-site
  • Optional relay modules – flexible and cuts down on configuration and monitoring cabling

Easy maintenance

  • Each channel is inhibited separately – plant safety is not compromised during checks
  • Routine calibration from front panel – reduces service overheads by half
  • One universal gas card – reduces spares holding


Size483 x 133 x 294 mm (19.0 x 5.25 x 11.5 ins)
Weight9.5 kg (21 lbs)
Enclosure materialAluminium alloy
MountingRack mounted (3u format).  Wall mounted and floor standing cabinets are optional, dimensions on request.
Channels16 per rack
Operating temperature0°C to +50°C (32°F to +122°F)
Humidity0-95% non-condensing
InputsGas    2 or 3 wire 4-20mA (sink or source), or mV bridge
Fire – smoke & heat detectors, manual call-points   Maximum of 32 loopes per rack (ie 16 twin zone fire modules)
OutputsAnalogue 16 x 4-20mA, max. load 960 Ohms or 1-5 V, min. load 100 Ohms
External audible/visual alarm drive Powered 24 V dc, max load up to 200mA for each alarm level.
RelaysType Up to 84 DPCO contacts rated 5 A @ 250 V ac, non-inductive load
Assignment – Common Alarm 1, Alarm 2, Alarm 3, Fault
– Per channel Gas alarms 1, 2 & 3, fire &
  – Voting Up to 16, configurable
                      – Relay modes Energised/de-energised,
latched/non-latched, time-delayed, pulsed
Digital communicationsWith PanelsPro or SetGMon only
Event loggingBuilt-in datalogger – data available via communication links with PanelsPro or SetGMon only
Panel indicationChannel number: 4 lines x 20 characters
Gas reading: On main LCD plus green LED bar-graph on channel card
Measurement units:  % LEL, ppm, % Vol, Fire
System fault – integrity watchdog:  Yellow LED
Alarm indicationAs standard: 3 individual & 3 common alarms (red LED); Fault – individual & common fault (yellow LED); Inhibit – individual inhibit (yellow LED)
PowerAC mains: 100 – 260 V ac 50/60 Hz external
DC: 27.6 V
Battery back-up: external
ApprovalsLow voltage directive – EN61010-1
EMC Directive – EN 50082-1
EMC Directive –  EN 50081-1EN 50270, EN61000-6-4ATEX: Conforms to EN60079-25 in configuration with Zener Barrier Baseefa 05Y0090/1