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PPM Gas Monitor

PPM Gas Monitor
PPM Gas Monitor
Product Code : 35
Product Description

PPM Gas Monitor


  • Best All-in-one Compact GMS.
  • Up to 8 Gas Sensors.
  • All combustible, toxic, O2, O3 gases.
  • 3 settable alarms per sensor.
  • Depletion / enrichment programmable.
  • % LEL / % Volume / ppm selectable scale
  • 16 X 2, back-lit LCD display.
  • All settings through magic buttons & software


This is a 4 input gas control panel that can be upgraded to 8 by using a 4-input expansion module, easily connectable directly into the unit. The panel accepts analog 4- 20mA inputs and every input can be configured for a different kind of gas detector in order to detect both flammable and toxic compounds as well as Oxygen depletion. The backlit LCD display assures a precise indication of the gas concentration being measured as well as the alarm set points. Mode status LED's provide a visual indication for alarm levels, fault and power-on. An internal buzzer is provided for an audible alarm with front panel reset facility.

The control panel comes complete with 5 relays, one for each threshold (AL1, AL2, AL3), 1 for fault (FLT) and 1programmable. The extension board offers 4 additional inputs and 16 electrical Open-Collector outputs, to be linked to two thresholds (AL2AL3) of each of the 8 Inputs. The control panel box is capable to fit in a 12 VDC-7 Ah additional battery to ensure its correct working should main power supply fails. Available also in version with pre-warning output sequence and alarm output sequence.

Programmable Functions 

Alarm Levels

3 user Programmable

Alarm Relays

Normally Open or Normally closed.

Display Scale

% LEL or % Vol. or ppm

Oxygen Alarm

Enrichment or Depletion

Alarm Mode

Instant Latch or
Delayed ON (0 -30 min)
Delayed OFF (0-30 min)

 Technical Specification 


Upto 8 analog inputs 4-20 mA

LED indications

Pilot, Al1, Al2, Al3, Fault and Battery Low.


Backlit Alphanumeric LCD 16character 2 lines

Relay Outputs

5 relays NO-C-NC, Gr.AL1, Gr.AL2, Gr.AL3, Gr. Fault, Programmable Aux.

Electrical Outputs

16-2 (Al2 & Al2) Al3) per channel for Annunciator Panel-optional

Operating Modes

Operation, Maintenance, Program

Power Supply

220 V AC+/- 10%

Battery Back-up

Built-in, Time 1 hr to 24 hrs.


360 x 225 x 150 mm

Operating temperature

0-45 degree C

Relative humidity

5-90% non-condensing