Amphenol SGX Sensortech VQ22 Combustible Gas Detector Elements are improved poison-resistant sensor consisting of two matched elements which are used for the detection of combustible gases, particularly methane in air mixtures in concentrations from 0.1% upwards. The VQ22 Series has no interference from water vapour or carbon dioxide. Using the recommended bridge circuit below and the suggested mounting arrangement, the minimum sensitivity is 10mV/% methane. The VQ22 has been designed for use in atmospheres where traces of silicone and other poisoning agents may be present.
Detection of combustible gases
Methane in air mixtures in concentrations from 0.1% and up
No interference from water vapor or carbon dioxide
Designed for use in atmospheres where traces of silicone and other poisoning agents may be present
Bridge power consumption: 0.48W max
Typical average sensor current: 175mA
2.0V ±0.1V bridge supply
0.45W maximum bridge power consumption
175mA typical average sensor current
10mV/% minimum methane sensitivity
2s response time
Amphenol SGX Sensortech Pellistor VQ Gas Sensors
High-quality, low-power pellistor pair optimized for the detection of combustible gases.