Temperature Sensors 101

Temperature sensors of group 101 type 1 are designed for measuring the temperature of the ambient environment, liquid, gaseous, and bulk chemically non-aggressive media, as well as the surface of solid bodies in various industries.

Temperature is the most commonly measured parameter, and overheating is one of the most dangerous factors in equipment operation, which is why there are many methods and places for applying temperature sensors.

The operating principle of resistance temperature detectors is based on the change in electrical resistance of conductors and semiconductors depending on the temperature. The material from which such a sensor is made must have a high temperature coefficient of resistance, a maximally linear dependence of resistance on temperature, good reproducibility of properties, and inertness to environmental effects. These properties are most typical of platinum; copper has slightly less.

Thermocouples are exclusively differential temperature sensors. They generate an electrical signal proportional to the temperature difference between two different points. Therefore, the junction where the measured temperature is taken is called the "hot" junction, and the other junction (which cannot be avoided) is the "cold" junction.

Classification of REGMIK 101 temperature sensors by type of measuring (sensitive) element

• Resistance temperature detectors (thermometers):
• Resistance temperature detectors TSM (TSM sensor)
• Resistance temperature detectors TSP (TSP sensor)
• Thermoelectric resistance temperature detectors (thermocouples):
  • Thermocouples TXA
  • Thermocouples TXK
  • Thermocouples TJK
• Semiconductor converters – TP.

Main technical specifications of 101 temperature sensors:

• Accuracy classes – A, B, C (for resistance temperature detectors), 1, 2 (for semiconductor temperature detectors);
• Connection scheme of sensitive element – two-wire, three-wire, four-wire;
• By type of sensitive element divided into:
  • Resistance temperature detectors (50M, 100M, 50P, 100P, Pt100, Pt500, Pt1000, Pt2000, Pt10000),
  • Thermoelectric converters (thermocouples TXA (K), TXK (L), TJK),
  • Semiconductor (DS18B20);
• Protective fitting material – steel 12X18H10T;
• Degree of protection against dust and water – IP54;
• Design of resistance temperature detectors – non-disassemblable;
• Insulation resistance – not less than 100 MΩ.