The VQ600 series from Amphenol SGX Sensortech is designed for fixed gas detection systems and implement either thermal conductivity or catalytic detection. The VQ600 can detect and monitor various gases in the range 0% to 100% LEL for combustible gases and 0% to 100% volume in thermal conductivity mode when using the Amphenol SGX Sensortech range of pellistor gas sensors. There are three types of mounting thread available to allow easy fixing to the junction box of the fixed system and the facility to attach accessories to the sensor via an external M46 thread.