Each detection point of your fixed gas monitoring system consists of a remote sensor and a control module GMA 301, which are connected by means of a remote sensor cable. The GMA 301 provides the power supply for the connected remote sensor and receives and processes the sensor signals. It monitors the ambient air for the presence of toxic or combustible gases and vapours or for its oxygen content.

The GMA 301 is a development from the GMA 100 and offers an additional variety of features, which allow to adapt the gas monitoring system to your specific requirements:
  - Sensor signal filter and linearissation.
  - CAN Bus for data transfer to a computer.
  - Alarm for rapid rise of the gas concentration, even before pre-set levels are exceeded.
  - Variable setting of three gas alarm thresholds.
  - Time delay for the alarms.
  - De-activation of alarms only when the relative threshold is deviated (alarm hysteresis).
  - Relays for alarms and failure.
  - Levelling of sensor signals to avoid false alarms.
  - 4 - 20 mA analog output signal.