Michell Instruments Ltd. is a British manufacturer specializing in high-precision dew-point, relative humidity and oxygen analysis for industrial process applications. Founded in 1974 and headquartered in Ely, Cambridgeshire, UK, the company is now part of the Process Sensing Technologies (PST) group. Its core product families include dew-point transmitters and chilled mirror hygrometers, relative humidity sensors, process moisture analyzers, oxygen analyzers and hydrocarbon dew-point analyzers. Michell devices are designed for integration into industrial automation systems and support communication via Modbus TCP, RS485 Modbus RTU and 4-20mA analog outputs. Industries served include petrochemical, power generation, natural gas processing, pharmaceutical manufacturing and compressed air systems.