Powerful controller for sophisticated gas detection systems
Wherever gases are used or may be present in industrial and commercial applications, they must be monitored. A gas detection system consists of one or more transmitters, which use sensors to detect gases, and a controller, which has a wide range of tasks. The GMA200-MT16 controller is ideally suited for use in complex gas detection systems with up to 16 digital or analog transmitters. Safety measures can be connected directly to the GMA200-MT16 via internal relays. The current measured values, alarms and special states of the transmitters can be viewed directly on the controller’s display.
Fixed transmitters monitor combustible or toxic gases and vapors present in the ambient air as well as the oxygen concentration. A controller displays the measured gas concentrations centrally and processes the incoming signals. The GMA200-MT16 is the right choice if
- gases are monitored with up to 16 digital or analog transmitters
- you want safety measures to be operated via the controller
- the measured values need to be displayed centrally
- an acoustic and visual alarm is required on site
- you want the operating status and alarms to be indicated by status LEDs
Wide range of applications
The GMA200-MT16 controller and the connected transmitters form a stationary gas detection system for measuring toxic and combustible gases as well as oxygen concentration. Up to 16 digital transmitters can communicate with the controller via the RS-485 interface.
Analog transmitters (up to 16) can be connected via 0.2-1 mA or 4-20 mA. The GMA200-MT16 is suitable for any GfG transmitter and any available gas type. This offers a large number of possible combinations of gases, measuring ranges, measuring points and Ex-zones to be monitored simultaneously. The controller is designed for mounting on a DIN rail (TS35), for example in a control cabinet. The supply voltage is 24 V DC.
Internal relays and extensions
Six internal relays with one normally open contact each can be programmed individually for the implementation of safety measures. Two additional relays are available for fault messages and maintenance. If your area of application requires it, the number of programmable relays can be increased to up to 70 (6 internal and 64 external relays). The relay modules are connected via the GMA bus interface.
GfG’s GMA200-RT and GMA200-RTD relay modules allow safety measures to be implemented in a decentralized manner, reducing the amount of cabling required.
Clear indicators for assessing the hazard situation
The GMA200-MT16 has a color backlit 2.2-inch display on which the current measured values of the connected transmitters are indicated at any time. In the event of an alarm, the background color changes from green to red. At the same time, LEDs indicate the alarm level and the switching states of the relays. A local alarm is triggered by a loud, integrated buzzer (70 dB(A)). Two input slots are available for external alarm acknowledgement push buttons.
Operation, visualization and data storage
The controller is operated via five push buttons and the alarm is intuitively acknowlegded the same way. The device can be configured via the mini-USB interface using a PC and the GMAConfig software. With the optional GMA200-VS software, all measured values and statuses of the connected transmitters can also be displayed decentrally on a PC or monitor. Equipped with a microSD card, the controller permanently stores measured values, average values, alarm events and faults at individually configurable intervals for evaluation.
Key features at a glance:
- Suitable for every GfG transmitter
- Monitors 1 to 16 measuring points
- 8 integrated relays for safety concepts, fault messages and maintenance
- 0.2-1 mA, 4-20 mA or RS-485 (Modbus)
- Color backlit 2.2″ display
- 15 colored status LEDs
- Audible alarm
- Housing for rail mounting (TS35)
- Data logger (microSD card)
- Relay module for expansion (up to 4 modules with 16 relays each)
- Visualization software
- Uninterruptible power supply
Approvals / Certifications:
- ATEX certification: II (2) G
- SIL 2/3