GMA400-MT

Powerful controller for monitoring gases in sophisticated applications

Applications in which combustible and toxic gases or the concentration of oxygen need to be monitored are getting more and more complex - and so do the requirements they have for gas detection systems. The performance and technical possibilities of the GMA400-MT contribute to the safety of people, facilities and the environment even in the most challenging conditions. A single GMA400-MT can monitor up to 128 transmitters or measuring channels as well as 32 virtual transmitters for calculated parameters or environmental influences. Thanks to its network interface, you will need no additional hardware to integrate it into superordinate safety systems or for gaining remote access to the device. Up to 192 external relays can be added to the eight integrated ones, and the central display of measured values on the large color screen can be expanded with display modules for local visualization.

Fixed gas detection systems monitor combustible and toxic gases in ambient air as well as the oxygen concentration. Controllers are used as a central display of the measured gas concentrations as well as the processing of incoming signals. The GMA400-MT is the right choice for you if 

  • you need to monitor very complex applications with numerous measuring points
  • you want to manage safety measures on the controller
  • the measured values need to be displayed centrally
  • all data must be available centrally via ethernet
  • you want a future-oriented solution for both old and new gas detection systems

One controller - numerous possibilities 

The GMA400-MT controller and the up to 128 digital transmitters that can be connected to it form a fixed gas detection system for measuring toxic and combustible gases as well as the oxygen concentration. Up to 16 of the 128 transmitters can be connected via analog inputs. All transmitter connections are also ACDC capable. Since the GMA400-MT is compatible with every GfG transmitter and every available type of gas, there is a large number of possible combinations of gases, measuring points and Ex zones which can be monitored simultaneously.

State-of-the-art communication

The GMA400 comes with an ethernet connection of up to 100 Mbit/s, making any gateway solutions obsolete. This allows you web access to the controller from anywhere at any time. For a better visualization as well as for configuration we also offer an app with intuitive controls which can be downloaded to any Android smartphone or tablet with access to the internet. Both the controller and the app are protected from unauthorized access by passwords.

Easy integration of safety measures

The more complex a gas detection system is, the more extensive are the alarm and safety measures that come with it. To control them, you will need relays. The GMA400-MT comes with eight internal relays whose number can be increased by up to 128 using external relay modules. Each GfG relay module offers 16 relay contacts with floating changeover contacts for effective control of your safety measures. Another optional extension to your safety system are the up to 16 display modules which will provide not only additional, decentralized displays but also four further relays each.

 

Detailed display for an ideal overview

The high-resolution 2.4-inch color display offers different display modes which you can switch between easily. Choose between one measuring point's detailed view, a group view or an overview of all connected transmitters. The detailed view mode displays information on the current measured value, including the type of gas and unit, the maximum and minimum values as well as short-term and long-term values of a single measuring point. In the group view, you will find summarized information on certain transmitters, i.e. in a particular area of your plant, while the overview mode will display the most relevant data on all connected transmitters. There is an intuitive 5-button control interface right next to the display, allowing for easy navigation of the menu and acknowledgement of alarms.

 

In a nutshell:


General information:

  • Suitable for every GfG transmitter
  • Monitors 1 to 160 measuring points (32 of which are virtual)

Equipment:

  • 8 integrated relays for safety concepts, fault notifications and maintenance, can be expanded by 192 additional relays
  • Connection either digital (Modbus), analog or ACDC (both using 4-20 mA)
  • High-resolution 2.4-inch color display
  • Integrated ethernet with up to 100 Mbit/s
  • Switch between detailed view, group view and overview

Optional:

  • Relay modules for up to 128 additional relays
  • External display modules with four further relays each
  • Android app

Approvals / certifications:

  • Technological suitability for gas measurement in garages and tunnels (DIN EN 50545-1)
  • Meets garage regulations of Switzerland (SWKI VA103-01)
  • Hardware complies with EU standard for functional safety (DIN EN 61508-2: 2011)
  • Advanced SIL capability (up to SIL 3)

Extensions and accessories

GMA200-RT


Relay module for extension of GfG controllers
» more

GMA200-RTW


Wall-mounted relay module for extension of GfG controllers
» more

Accessories GMA400-MT


Complete list of accessories for the GMA400-MT
» coming soon

Our experts are happy to answer your questions! How to find us