Temperature is the most common measured parameter, and overheating is one of the most negative factors in the operation of equipment, therefore, there are a huge number of ways and places of using temperature sensors.
The principle of operation of resistance thermocouples is based on a change in the electrical resistance of conductors and semiconductors depending on temperature. The material from which such a sensor is made should have a high temperature coefficient of resistance, possibly a linear dependence of resistance on temperature, good reproducibility of properties, and inertness to environmental influences. Platinum is most satisfied with all of the above properties, and copper is slightly less satisfactory.
Thermocouple Are exclusively differential temperature sensors. They generate an electrical signal proportional to the temperature difference between two different points. Therefore, the junction (junction) that we use to measure the required temperature is called the "hot" junction, while the other junction (from which we can not escape) is called the "cold" junction.
Classification of temperature sensors Txx-001 by the type of measuring (sensing) element:
- resistance thermocouples (thermometers) - TSM-001, TSP-001;
- thermoelectric thermocouples (thermocouple) - THA-001, THK-001, TJK-001;
- semiconductor converters - TP-001.
Main technical characteristics of temperature sensors TSM-001, TSP-001, THA-001, THK-001, TJK-001, TP-001:
- CHE connection diagram - two-, three-, four-wire;
- type of rated static characteristic (NSX):
- resistance thermocouples (TC) - TSM-001 (50M, 100M), TSP-001 (50P, 100P, Pt100, Pt500, Pt1000, Pt2000, Pt10000);
- thermoelectric converters (TP, thermocouple) - THA-001 (type К), THK-001 (type L), TJK-001 (type J);
- semiconductor - TP-001 (DS18B20);
- protective reinforcement material - stainless steel 12X18H10T;
- degree of protection against dust and water - IP54;
- the design of thermal converters (temperature sensors) - non-separable;
- insulation resistance - not less than 100 megohms;
- tolerance classes - A, B, C (for vehicle), 1, 2 (for TP).
You can get acquainted with the passport and operating manual for the sensors on the tab DOWNLOAD.
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