The GMA 313 is a CO2 gas monitor produced by GfG. It can be used to detect the concentration of CO2 gas in the working environment.
The GMA 313 is a compact CO2 gas monitor using infrared detection for continuous ambient air monitoring. It provides audible and visual alarms when CO2 levels exceed preset thresholds, with a relay for external control. The device requires a 30-minute warm-up before operation and includes service functions for adjusting alarm thresholds using a calibration adapter. Maintenance should be performed annually or as needed to ensure accurate readings and safety compliance.
Key features include IP54 protection, a diffusion inlet, and optional mounting brackets. The unit operates on 110V AC, with alarm thresholds set at 1.5% and 3.0% CO2. Faults are indicated by red and yellow LEDs, and the device can be reset locally or remotely via the optional GMA 313 EQ unit.
| Detection Principle | Infra-red (NDIR) |
|---|---|
| Relay Output | Max. 250 V AC, 5 A |
The GMA 313 requires a 30-minute warm-up period before it can detect CO2 concentrations.
Press the reset button “Q” to reset the alarm. The buzzer can be reset at any time by pressing “Q”.
The GMA 313 has an IP54 protection rating against water and dust.