The immersion and insertion resistance thermometers comprise a rugged sensor made of stainless steel. 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. Pt100 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.