Temperature sensors in the plastic case are intended for temperature measurements of gaseous, eventually liquid materials. For long-lasting temperature measurements (especially at the temperatures over 90 °C) there is better to use the sensor with thermowell-combination. The sensors have always plastic polyamid case in which the temperature sensing element is located.
The lead-in cable has standard lengths 1, 2, 5 and 10 m. The diameter of the case TR 151 is 6 mm, the case diameter for TR 152 is 8 mm. All types of thin layer resistance-type sensing elements made by company SENSIT s.r.o. (Ni1000, Ni891, Pt 100, Pt 500, Pt 1000, NTC 20kW) and also others can be used. The wiring of the sensors is always 2-wire.
Material of the case has medium resistivity to atmospheric aging, it resists oils, fuels, hydraulic liquids, alifatic and aromatic hydrocarbons, esters, ketons and slight alcalis. Material is not resistant to acids, strong alcalis and chlorinated hydrocarbons.

Used sensing elements: Ni 1000/5000, Ni 1000/6180, Ni 891, Pt 100, Pt 500, Pt 1000, thermistor NTC 20kΩ.