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  Products > Gas Detectors > Sub-Products > Fixed Gas Detector > GMA41 / GMA 44

Control and Evaluation Unit for all Remote Sensors

GMA 41 1-Channel, for one remote sensor
GMA 44 4-Channel, for 1 to 4 remote sensors

Easy snap-on mounting
For remote sensors with 0.2 .. 1 mA or 4 .. 20 mA signal3 threshold alarms, 4 relays with change-over contacts



 Downloads
Brochure for GMA 41
Product Information PDF
Order Detail
Fixed gas warning system for DIN-rail mounting
Safely monitors over 500 gas hazards


The one channel gas warning system GMA41 and the 4-channel device GMA44 form, together with the efficient and robust transmitters of GfG, safe and reliable gas warning systems. The flexibility of the GMA's to adapt to different measuring tasks ensures individual and cost effective solutions. More than 500 gases can be safely measured and monitored.

Combustible / explosive gases

Where combustible gases may build up explosive concentrations, GfG offers a wide variety of sensors and transmitters.

Toxic gases

Specially selected GfG transmitters provide reliable monitoring of areas, where toxic gases and vapours may be present.

Oxygen

The GfG transmitters avoid hazards caused by oxygen deficiency or surplus.

Single or multi-channel controller

The GMA41 is a single channel system. A transmitter, in conjunction with a GMA41 forms an independent gas warning system.

The GMA44 is a cost effective and space saving controller for many detection points. Up to 4 transmitters, of the same kind, can be operated simultaneously from one GMA44.

  - Easy mounting on DIN-rail
  - State-of-the-art microprocessor technology
  - Flexible, for all measuring tasks
  - Can also be configured at a later stage
  - GMA41 EC Type Approval: BVS 03 ATEX G 005 X, PFG-Nr. 41300500 P


TECHNICAL DATA
Display :
3 digit LED for gas concentration and adjustment parameters, additional digital menu point display, LEDs for operation, fault, alarms 1, 2 and 3.
Adjustment elements :
Keys for variable setting of alarm thresholds, zeropoint and calibration.
Function keys :

Alarm reset, test and function check of detection range and calibration, test of relay functions.

Plug connection :
Combination of any number of GMAs 41 and 44 by means of lateral pin connection for common voltage supply and relaying of the logical outputs for alarm 1 to 3 and fault (only GMA 41 B and GMA 44 B).
Input signal : 0.2 .. 1 mA and 4 .. 20 mA
Output signal : 4 .. 20 mA (only GMA 41)
Current supply : 24 V DC / (230 V AC)
Alarm relaying :
4 voltage-free relays for controlling of external devices by alarm 1, 2, 3 and fault. Switching performance: 230 V / 4 A.
Safety :
Continuous self monitoring of processor function, under and over voltages.
Dimensions : 106 x 90 x 58 (WxHxD)