Amphenol SGX Sensortech VQ21T Combustible Gas Sensor Elements are part of the VQ21 range of high power, low voltage, poison resistant detectors for general purpose applications. The VQ21T sensor elements are particularly suitable for fixed-point systems where the consideration of power consumption is not an overriding factor. These elements may be used to detect most flammable gases and vapors and, in particular, can detect methane in air mixtures with concentrations from 0.1% up to 5% (100% LEL). The VQ21T Sensor Elements provide several orders of magnitude longer life than a standard VQ1 pellistor.
For fixed systems
2.0V ±0.1V bridge supply
300mA average sensor current
>5 years operating life
750mW maximum power consumption
15mV/% minimum sensitivity
2s typical response time
-40°C to +70°C operating
+10°C to +25°C storage
0 to 80% relative humidity, non-condensing
Amphenol SGX Sensortech Pellistor VQ Gas Sensors
High-quality, low-power pellistor pair optimized for the detection of combustible gases.