The sensors are constructed with a stainless steel flameproof enclosure with an integral stainless steel sinter for the safe entry of the gases being tested. Three types of mounting thread are available for easy fixing to the junction box of a fixed system. An external M46 thread is present on the front face for attaching optional accessories for use in different applications. The IR600 Series incorporates an inbuilt and sealed preamplifier/buffer and requires connection to suitable transmitter systems for their power supply, operation, and signal processing. Lead-in/out terminates in an 8-pin connector.