The GMA200 Series is a fixed-system controller for monitoring combustible or toxic gases and oxygen concentration across up to 16 digital or analog transmitters.
The GMA200-MT16 is a sophisticated controller designed for complex gas detection systems that monitor combustible or toxic gases and oxygen concentration. It supports up to 16 digital transmitters via RS-485 (Modbus) or analog transmitters via 0.2-1 mA or 4-20 mA input. Features include 8 integrated relays (6 programmable), color-backlit 2.2-inch display with 15 status LEDs, audible alarm (70 dB), and DIN rail mounting. Optional data logger with microSD card stores measured values and alarm events. Suitable for any GfG transmitter with ATEX II (2) G certification and SIL 2/3 rating. Supply voltage: 24 V DC.
| Performance | |
| Gases and sensors | GfG transmitters for combustible, oxygen and toxic gases and vapors |
| Display and control elements (GMA 200-MT & GMA 200-RTD) | Backlit LCD graphical display 1.3x2.1 in (33x53 mm with 132x65 pixels); 5 buttons (left, right, up, down, OK); GMA 200-MT LED indicators: 8 status and alarm (4x red, 1x green, 3x yellow); 8 relay (8x red); GMA 200-RTD LED indicators: 19 status LEDs for operating and relay statuses |
| Controller outputs | Modbus (RS485); 6 relays (normally open contact), freely configurable for single alarms per measuring point and alarm threshold, configuration of collective or group alarms, fault messages and voting functions; 1 relay for maintenance and 1 for fault messages (closed-circuit principle); 2 analog outputs: 4-20mA / 600 Ohm max. resistance, freely configurable |
| Power | |
| Power supply | 110 V AC; 4 channel uses 2 Amp power supply; 6 & 8 channel uses 3.2 Amp power supply; 12 channel uses 5 Amp power supply; 16 channel uses 10 Amp power supply; Protections - short circuit, overload, over voltage and over temperature; LED indicator for power |
| Physical | |
| Dimensions (HxWxD) | Control panel boxes for 4 & 6 channel - 14x12x6 in / 356x305x152 mm; Control panel boxes for 8, 12 & 16 channel - 16x14x8 in / 406x356x203 mm; Relay module box - 10x8x4 in / 254x203x102 mm |
| Housing | Polycarbonate material; Opaque cover; IP 68; NEMA 6P, 4X, 4, 3R and 12; Integrated lock hasp |
| Connectivity | |
| Connection options (GMA 200-MT) | Gas warning system GMA200–MT6: Up to 6 analog or digital detectors; Gas warning system GMA200–MT16: Up to 16 analog or digital detectors |
| Connection options (Relay Module) | Terminal blocks: 18 GA (0.8-2.5 mm2) cross section; 2-4 wire cable 20 GA (0.5-1.5 mm2) LiYY, NYM (for GMA 200 supply); 2-wire 18 GA (1x2x0.22 mm2) BUS-LD (for GMA Bus with a length > 33 feet / 10m); RS485 GMA Bus half-duplex galvanically isolated max. 230400 Baud (for GMA 200-M, control center, PC, PLC or Gateway) |
| Approvals & Warranty | |
| Protection classes/Approvals | Housing: NEMA 4X; Electromagnetic compatibility: EN 50270:2015 (interference emission: type class I, interference immunity: type class II); Electrical safety: EN 61010-1:2010 (Pollution degree 2, overvoltage category III for relay contacts); Functional safety: EN 50402:2017; IEC 61508-1 to -7:2010 (SIL2/SC3); EN 50271:2018; EN 62061:2016; ISO 13849-1:2015; Metrological suitability: EN 60079-29-1:2016 (EX); EN 50104:2010 (OX); EN 45544-1/-2/-3:2015 (TOX); ATEX approval (GMA 200-MT only): Applied for in accordance with ATEX 94/9/EC; Metrological suitability testing (GMA 200-MT only): Applied for according to DIN-EN 60079-29-1 |
| Other | |
| Note | add 6 in to height for horn/strobe |
| Controller inputs | 16 analog inputs (4-20 mA or 0.2-1 mA); max. 50 Ohm input resistance; 2 alarm resets: Acknowledgement of alarms can be freely configured; 2x RS485 BUS (for connection of external relay modules or digital transmitters in BUS wiring); 1x RS485 BUS (for digital transfer of measured and output data to a higher-level control centre or with master functionality of a GMA 200-MT for the connection of GMA 200-RT relay modules) |
| Relay module | 16 relays per module; up to 4 relay modules per GMA 200-MT system (for up to 64 additional relays); freely configurable for single alarms per measuring point and alarm threshold, configuration of collective or group alarms, fault messages and voting functions |
| Horn/Strobe | 90 dB @ 1m; Single tier stack light; LED 960 mcd lumens; Height - 6 in / 150 mm; Main body - ABS resin; Lens - ABS translucent resin |
Calibration, repair and maintenance for your detection instruments.