These resistance-type sensors are intended for contact temperature measurements of liquid or gaseous substances. The sensor consists of a metal measuring stem and a plastic connection head. All metal component parts are made of EN X5CrNi18-10 (DIN 1.4301) class stainless steel. The basic lengths of the measuring stems are 70, 120, 180 and 240 mm. The plastic connection head is provided with a cable outlet ending (the terminal board is placed in the conection head) or a connector. All these sensor types meet the IP 65 ingress protection requirements according to the EN 60 529 standard. The plastic holder is a part of the sensor. Stainless steel thermowell JS 130, metal central holder for temperatures over 150°C, lead-in connector ELKA 4012 or connecting cables with the straight-type RKT connector or the rectangular-type RKWT connector can be delivered as accessories. The sensor-central holder combination is designed to measure temperature in air condition ducts. The sensor-thermowell combination is designed to measure temperature in tubing. The sensors can be utilised for any control system that is compatible with sensing element types or active output signals quoted in the specification table. The standard operating temperature range is -30 to 150°C. By using a sensor with a longer stem the upper limit of allowable temperature can be extended up to 250°C. For the HS 120 and HS 120K thermistor sensors, the upper limit of allowable temperature is 150°C. The sensors are designed to be operated in a chemically non-aggressive environment.