Fixed Systems   GfG's fixed gas detection systems are available as either easy to operate single point units or as larger, multiple point systems. These systems consist of controllers and up to several hundred transmitters that communicate with each other. The transmitter converts the measured gas concentration to an electrical signal which is then transferred to the controller. The controller displays the gas concentration and immediately activates alarms in case of a gas leak. Advanced features such as data logging or online data transmission allow the user to easily monitor changes in the environment. The stand alone unit is a combination of one transmitter and one controller.
Controller GfG controllers are designed to operate any transmitter offering either a 0.2 to 1 mA or a 4 to 20 mA signal. The controller processes the electrical signal received from the transmitter, evaluating and displaying the measured gas concentration. All controllers offer three on-board relays that are activated if the gas concentration exceeds the alarm threshold. All controllers are available as 1 to 4 channel controllers, meaning that one to four transmitters detecting the same gas in the same range can be connected to one controller.
	GMA36 Pro Stand Alone Gas Detection System Loud built-in buzzer 102 dB AutoCal for easy and quick calibration Big illuminated LCD Plug-in Smart Sensors Scalable detection ranges Simple 3-key operation Easy service For many toxic gases, hydrogen and oxygen Splash water proof enclosure (IP54)
	GMA 40B Series Gas Monitoring Controllers Single or four channel controller Easy mounting on DIN-rail Multiple alarm points with relays
	GMA 80A Series Compact Controller for all Transmitters Wall mounting enclosure State-of-the-art microprocessor technology Flexible, for all measuring tasks For 1 to 4 transmitters Can be reconfigured at a later stage Built-in alarm light and horn
	GMA 100 II Fixed Gas Monitoring System Flexible, customizable, and economical Microprocessor controlled for all monitoring tasks Easy to operate
	GMA 300 Gas Monitoring System Intelligent and flexible Gas monitoring and warning system 1 to 4 sensor controller Function tested by DMT-IBS/PFG
Transmitter The transmitter's sensor is the "nose" of a fixed gas detection system. The sensor is located in a metal sensor enclosure which is attached to the transmitter. Electronics inside the transmitter convert the gas concentration into an electrical signal for interference free transfer to the controller. The transmitter and the controller can be installed several hundred meters apart from one another.
	CC28 Transmitter Combustible Gas Detector Full-featured smart transmitter for combustible gas measurement Non-intrusive calibration adjustment Sensor lasts 5 years or longer Also available for wide range of toxic gas measurement Display of gas concentration at transmitter Ex-proof visual and audible alarm One-person calibration at transmitter by means of touch keys or remote control Plug-in smart sensor – sensor replacement without opening casing
	CC 0238 Remote Sensors For Combustible Gases and Vapors Simple calibration and setup Poison resistant sensors Ex-proof housings
	EC28 Transmitter For Toxic Gases, Oxygen, and Hydrogen Reading of gas concentration at transmitter display Ex-proof visual and audible alarms ATEX certificate II 1 G EEx ia IIC T4 / II 2 G EEx em [ib] IIC T4 One-person calibration at transmitter using touch keys or remote control Plug-in smart sensor – sensor replacement without opening the casing
	GMA36 Pro Stand Alone Gas Detection System Loud built-in buzzer 102 dB AutoCal for easy and quick calibration Big illuminated LCD Plug-in Smart Sensors Scalable detection ranges Simple 3-key operation Easy service For many toxic gases, hydrogen and oxygen Splash water proof enclosure (IP54)
	CI21 Transmitter Low Maintenance Charge Carrier Injection Sensor Robust, long-life sensor withstands high NH3 exposure Low temperature operation to -40oF (or lower) Low cross sensitivity Eliminates costly false alarms Low cost of ownership
	ZD21 Series Oxygen Detector Extremely stable O2 sensor lasts 5 years or longer Fast response No influences from pressure, humidity, or temperature No damage from carbon dioxide (CO2)
	IR24 Highly Selective, Substance Specific IR Sensor No false response due to interfering contaminants Extremely stable, low maintenance system MWG with infrared (NDIR) sensor One-person calibration on site Output 0.2–1 mA or 4–20 mA
Stand Alone Units   Stand alone units are designed for applications where only one fixed point of detection is needed. The stand alone unit is a combination of one transmitter and one controller. The sensor detects the gas and converts the concentration into an electrical signal which is processed inside the unit. The stand alone unit is equipped with relays that activate external alarm devices.
	CC28 Transmitter Combustible Gas Detector Full-featured smart transmitter for combustible gas measurement Non-intrusive calibration adjustment Sensor lasts 5 years or longer Also available for wide range of toxic gas measurement Display of gas concentration at transmitter Ex-proof visual and audible alarm One-person calibration at transmitter by means of touch keys or remote control Plug-in smart sensor – sensor replacement without opening casing
	EC28 Transmitter For Toxic Gases, Oxygen, and Hydrogen Reading of gas concentration at transmitter display Ex-proof visual and audible alarms ATEX certificate II 1 G EEx ia IIC T4 / II 2 G EEx em [ib] IIC T4 One-person calibration at transmitter using touch keys or remote control Plug-in smart sensor – sensor replacement without opening the casing
	GMA36 Pro Stand Alone Gas Detection System Loud built-in buzzer 102 dB AutoCal for easy and quick calibration Big illuminated LCD Plug-in Smart Sensors Scalable detection ranges Simple 3-key operation Easy service For many toxic gases, hydrogen and oxygen Splash water proof enclosure (IP54)