GfG's fixed gas detection systems are available as easy to operate single point units or as larger systems with several hundred transmitters. These multiple point systems consist of controllers and transmitters that communicate with each other. The transmitter changes the measured gas concentration to an electrical signal which is transfered to the controller. The controller shows the gas concentration in a display and immediately activates alarming devices in case of a gas leak. Advanced features such as data logging or online data transmission allow the user to easily monitor ambient changes in the environment. The Stand Alone unit is a combination of both transmitter and controller. GfG controllers are designed to operate any transmitter offering either a 0,2-1 mA or a 4-20 mA signal. The controller processes the electrical signal received from the transmitter. It evaluates and displays the measured gas concentration. All controllers offer three on board relays that will be activated if the gas concentration exceeds the alarm level. All controllers are available as 1 or 4 channel controller. This means that either one or up to 4 transmitters detecting the same gas in the same range can be connected to one controller.
