GFG GMA 200-MW Gas Detection and Alarm Device (2 x 24 VDC, 20–30 V)

Gases and sensors: GfG transmitters for combustible, oxygen and toxic gases and vapors

GMA 200-MW wall mounting (dimensions): Approx. 10.6 x 11.4 x 3.9 in / 270 x 290 x 98 mm (W x H x D)

Display and control elements: Backlit LCD graphical display 1.3 x 2 in (33 x 53 mm with 132 x 65 pixels); 5 buttons (left, right, up, down, OK); LED indicators: 8 status and alarm (4x red, 1x green, 3x yellow); 8 relay

Connection options: Gas warning system GMA200–MW6: Up to 6 analog or digital detectors; Gas warning system GMA200–MW16: Up to 16 analog or digital detectors

Inputs: 16 analog inputs (4–20 mA or 0.2–1 mA; max. 50 Ohm input resistance); 2 digital inputs (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 GMA 200-MW for the connection of GMA 200-RW relay modules)

Outputs: 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: 4–20 mA / 600 Ohm max. resistance, freely configurable

Alarms: 3 independent threshold alarms per measuring point (AL1, AL2, AL3); Gas alarms can be freely set in the measuring range

Alarm activation logic: Ascending, descending, exceeding, not acknowledged, acknowledgeable (additional horn only), non-acknowledgeable, non-self-locking / self-locking

Data storage: Measured values stored on microSD card; Intervals can be set (5 sec.–60 min.); Records instantaneous and mean values, minimum/maximum concentrations; Logger settings individually for each measuring channel

Ambient temperature: Operation: -4 °F to +125 °F / -20 °C to +50 °C; Storage: -22 °F to +140 °F / -30 °C to +60 °C

External relay module: 16 relays per module; up to 4 relay modules per GMA 200-MW 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

Power supply: 2 x 24 V DC, 20–30 V; 1 x redundant voltage supply

Power consumption: Gas warning system GMA 200–MW6: 30 W (incl. connected detectors); Gas warning system GMA 200–MW16: 5 W (not incl. connected detectors); Relay module GMA 200 RT: 6 W

Datasheet