Schabus Gas detection panel GX-A1+ Nezt operated for fixed installation without gas sensor

It is a evaluation device for gas sensors that change an analog voltage when gas is detected. If needed, the old GX-A1 can be directly replaced by the new GX-A1+ without altering the installation. All previous connections are in the same positions. It alerts visually through the blinking of the display backlight and acoustically through a loud piezo buzzer. Additionally, a potential-free relay switches to close, for example, a solenoid valve or to directly shut down a connected gas boiler. Another relay activates in case of internally detected technical faults to inform building management systems about the error. Only one gas sensor can be connected to the GX-A1+, and the correct sensor must be selected based on the type of gas and suspected source. Furthermore, the mounting height determines either the sensitivity (carbon dioxide) of the sensor or the choice of the source (natural gas / bottled gas). The installation of the GX-A1+ is very straightforward. After removing the cover, the base part with all its connections (terminal blocks) for power supply, relay, and sensor is anchored to a wall, the wiring is securely and surface-mounted, the cover electronics are reinserted, and the device is closed. The backlit 2x 16 character plain text display continuously informs about the system status as well as the condition of the sensor. In the event of an alarm, the sensor voltage is displayed in mV. The SERVICE button allows access to many additional pieces of information that are permanently stored in the warning device. This includes, among other things, an alarm counter, the indication of the last error code, two temperatures within the device and processor, their maximum values, or simply the software version.