Freely programmable gas alarm unit in a compact wall mounting housing for the connection of up to four gas sensors. The control unit can monitor various types of gases. GW-S can be operated in single-stage or dual-stage mode. Limit values can be set as required. Four integrated relays can be assigned as required (1 relay is used for general alarm and 1 relay for the audible alarm signal (horn)). The other relays are available for control outputs.
The gas alarm system features a display with alternating indication of measured values and three operating levels:
1. Measurement level: Displays measured values, faults, alarms
2. Parameter level: Displays measuring ranges, limit values, alarm groups
3. Service level: Displays limit values, performs function checks of the relays, parameterisation
(such as alarm group and limit value settings)
GW-S alternately displays the concentration at each measuring point. If a sensor exceeds alarm level 1 or alarm level 2, the visual alarm and the alarm relay are activated. When the concentration falls below the alarm level, the alarm is cleared. It is also possible to program GW-S in such a way that alarm level 2 remains stored until a manual reset. The activation of the relay for the horn can also be programmed for each alarm level. Stop mode allows for permanent indication of the concentration at a given measuring point. GW-S is self-monitoring (line interruption, short circuit and power outage) and signals faults via LED and fault relay. In addition, the display shows an "E". The alarm function can be tested without test gas.
Version GW-S 2.1 for connection of up to two gas sensors.
Version GW-S 4.1 for connection of up to four gas sensors.