Schabus GX-A1+ Hub no sensor mains-powered detects Propane Butane Methane Ethanol Carbon dioxide
The new GX-A1+ is the direct successor of the long-proven GX-A1. It is an evaluation unit for gas sensors that change an analogue voltage when the gas is detected. If required, the old GX-A1 can be replaced directly with the new GX-A1+ without changing the installation. All previous ports are in the same positions.The display lighting flashes visually and a loud piezo sound generator provides an acoustic alarm. In addition, a potential-free change-over relay switches, for example, to close a magnet shut-off valve or to switch off a connected gas-thermal bath directly. A further change-over relay switches in the event of internal technical faults, in order to inform the building control system of the fault, for example.Only one gas sensor can be connected to the GX-A1+, depending on the type of gas and suspected source, the correct sensor must be selected. In addition, the installation height decides either the sensitivity (carbon dioxide) of the sensor or the choice of source (natural gas / cylinder gas).The installation of the GX-A1+ is very simple. After removing the cover, the bottom part with all its connections (screw terminals) for power supply, relay and sensor is wall-mounted, the cables are laid fixed and surface-mounted, the cover electronics are re-inserted and the device closed.The backlit 2x 16 character clear text display informs at any time about the system status as well as the status of the sensor. In the event of an alarm, the sensor voltage is displayed in mV. THE SERVICE key can be used to call up many more information that is permanently stored in the warning device. These include, for example, an alarm counter, the specification of the last error code, 2 temperatures in the device and processor as well as their maximum values or simply the software version.Since most sensors are wearing parts and are subject to natural aging, the day will come when the GX-A1+ reports an error and the sensor must be replaced. At many customer requests we have installed an activation so that the heating is not switched off during the time of the procurement of a new sensor. There is now a key combination that activates the alarm relay for 48 hours each. The remaining time is shown on the display.This text is machine translated.