Temperature sensors 209

Temperature sensors of group 209 type 2 are designed for measuring the surface temperature of solid bodies in various industries. They feature compact sizes, improved thermal inertia indicators, and do not require complex installation works when installed on site.

Temperature is the most common measured parameter, and overheating is one of the most harmful factors in equipment operation, therefore there is a wide range of applications and places for temperature sensors.

The operating principle of resistance temperature detectors is based on the change in electrical resistance of conductors and semiconductors depending on temperature. The sensor material must have a high temperature coefficient of resistance, preferably a linear dependence of resistance on temperature, good reproducibility of properties, and inertness to environmental influences. Platinum best meets these requirements; copper is slightly less suitable.

Thermocouples are purely differential temperature sensors. They generate an electrical signal proportional to the temperature difference between two different points. Therefore, the measuring junction (splice) used to measure the required temperature is called the "hot" junction, and the other junction (which cannot be avoided) is called the "cold" junction.

Classification of 209 REGMIK temperature sensors by type of measuring (sensitive) element

• Resistance temperature detectors (thermometers) - TSM, TSP;
• Thermoelectric converters (thermocouples) - TXA, TXK, TZHK;
• Semiconductor converters - TP.

Main technical characteristics of 209 temperature sensors:

• Measuring element connection scheme - two-, three-, or four-wire;
• By type of sensitive element they are divided into:
  • Resistance temperature detectors (RTDs, thermometers, temperature sensors) (50M, 100M, 50P, 100P, Pt100, Pt500, Pt1000, Pt2000, Pt10000);
  • Thermoelectric converters (thermocouples, temperature sensors) (TXA (K), TXK (L));
  • Semiconductor (DS18B20);
• RTD (temperature sensor) construction - non-disassemblable;
• Insulation resistance - no less than 100 MΩ;
• Tolerance classes - A, B, C (for RTDs), 1, 2 (for thermocouples).