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The TunnelCraft III CO/VIS Air Quality Monitor (AQM) uses infrared light and visible light to measure carbon monoxide and visibility in a single compact instrument. The AQM consists of a transceiver that projects infrared beams to a reflector unit mounted 3m away. The reflected light is received by the transceiver and the specific absorption is measured to determine the visibility dimming coefficient and carbon monoxide concentration in the tunnel atmosphere.
Features
- Measurement of CO by infrared absorption
- High resolution measurement of visibility
- Accuracy +/-1ppm for CO, 0.0002m-1 for visibility
- Designed to withstand the harshest environments
- Routine maintenance limited to annual cleaning of optical surfaces
- Current and relay outputs direct from sensor
- RS232 or RS485 - Modbus output optional
- Also available as a combined CO/NO/Vis sensor
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air quality monitoring, carbon monitoring, carbon monoxide monitoring, visibility monitoring, tunnel sensors
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