RKI Instruments 61-0220RK Combustible Sensor is a plug-in, four-pin sensing element used as the combustible gas detector component in RKI fixed-system and direct-connect gas detectors. The part is explicitly identified in RKI documentation as a combustible gas sensor with the 61-0220RK designation and is sold by distributors as a plug-in replacement sensor for RKI assemblies. Designed for use in industrial safety applications, this sensor serves as the detection element that enables monitoring of combustible gases within compatible RKI detector housings.
