The screw-in resistance thermometers comprise a rugged sensor made of stainless steel with fixed or sliding thread. The electrical connection is made with a connecting lead or a connection head of form MA. Depending on the version, the connecting leads are suitable for dry or moist rooms. The junction between connecting lead and protective tube is strain relieved and is fitted with bend protection. Protective tube and process connection are made of stainless steel. Other materials are available on request. Pt 100 temperature sensors according to IEC 751, category B are used as standard. Other categories or versions are also available with Pt 500 and Pt 1000. These sensors are available as single or double resistance thermometers. The screw-in resistance thermometers are available in two-, three- or four-wire circuitry. Applications Screw-in resistance thermometers are particularly suited for measuring temperature in liquid and gaseous media.