For more than 60 years, GfG has been committed to protecting people, industrial facilities and the environment by developing and manufacturing gas detection systems. With an extensive range of portable gas detectors and fixed gas detection systems, GfG can supply you with a selection of products for many applications and industries. Our scope also includes on-site service and advanced training courses.
We are specialists for gas detection solutions, not generalists in safety. No one can be the best at everything, but if you focus on one thing, you can achieve excellence. We work hard to provide you with the best gas detection equipment available, so you can focus on your task without having to worry about the risks that gases can pose. Because of that we invest more heavily in research and development than any other company. Approximately 13% of our annual turnover is reinvested in basic research and the development of new sensors and devices.
This includes finding solutions for customers whose requirements are not met by “off the shelf” products. We take pride in our longstanding cooperation with the Singapore Civil Defence Force (SCDF), for example. For many years now, they have put their trust in GfG’s portable devices, which we optimized to adapt to the Singaporean climate and fulfill the special requirements for integration into the SCDF communication network.
Gases are also used, or may be found, in smaller facilities such as combined heat and power plants and cold stores. A reliable gas detection system therefore makes a significant contribution to the safety of people, equipment and the environment. We have developed the GMA22-M for gas measurement in such applications. Up to four transmitters and relay modules can be connected to the controller. Also part of the extensive features is a display for measured value indication, integrated visual and audible alarms, and four internal relays for additional safety measures.
In many processes, gases need to be controlled – regardless of the size of the plant. Even in smaller applications, a gas warning system is indispensable. The GMA22-M is the ideal controller for this purpose, if
Wide range of connection options
Up to four transmitters can be connected to the GMA22-M via the RS-485 interface. In addition to the measured values, the controller also receives digital information such as status messages and service information. Alternatively, it is also possible to connect a transmitter via an analog 4-20 mA or 0.2-1 mA input.
If this is an ACDC capable transmitter from GfG, digital information can also be transmitted via the analog lines (only via 4-20 mA). Many transmitters from GfG can be calibrated remotely when digitally integrated or via ACDC. This greatly simplifies service which can be performed by a single technician.
Exterior features
The dimensions (97 x 140 x 50 mm) are exceptionally small. This allows the GMA22-M to be mounted almost anywhere on the wall. The housing is protected against dust and splash water (IP64). This enables use under difficult external conditions.
The 2.2-inch display is backlit in color. It lights up green in normal operation and red in the event of an alarm. The alarm levels are signaled by two red LEDs. In addition, there is an acoustic alarm via the integrated horn.
Two further LEDs indicate operating and special states in green and yellow. Below the display there is a pushbutton interface for intuitive operation and alarm acknowledgement.
Internal and external relays
The GMA22-M has four integrated relays for implementing safety measures. Additionally, up to four relay modules GMA200-RT can be connected via the RS-485 interface. With 16 potential-free change-over contacts each, the number of relays is increased up to 64.
Configuration of the GMA22-M and the relay modules is done via the GMA200Config software. Alarms, faults and measured values can be recorded via data logger on a microSD card, if desired.
The GMA22-M is available in four different versions:
Each version is optionally available with a digital or analog input signal.
General information:
Features:
Optional:
Our team can help you with any product information, quotes, or any general questions you may have about the product.
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