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Alphasense contemporary designed miniature CO2 infra-red sensors are self-contained, plug in sensors with integrated optics contained within standard sized miniature (20.0 mm) gas sensor housings. There are no moving parts within the sensors. An internal temperature sensor is included to enable the temperature to be monitored at the detectors, thereby providing the best means of compensating for temperature effects, including ideal gas law corrections.
CO2 Gas Ranges
IR-CO2-A1 Carbon Dioxide 0 to 5,000-ppm
IR-CO2-AH Carbon Dioxide 0 to 5% Volume
IR-CO2-AE Carbon Dioxide 0 to 20% Volume
IR-CO2-AS Carbon Dioxide 0 to 100% Volume
Sensor Interface
In order to derive a signal from the Alphasense infa-red sensors, the lamp should be pulsed at a constant frequency and duty cycle and power should be applied to the on-chip FET transistors. The signal can then be extracted from the on-chip FET transistor sources and the internal sensor temperature can also be monitored continuously.
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Sensor Notes
