The measuring element of a thermocouple temperature sensor is a thermocouple, which operates on the principle of the thermoelectric (Seebeck) effect. The thermocouple’s output is a thermoelectric voltage, the magnitude of which is proportional to the temperature difference between the measuring and reference (cold) junction.
Thermocouples are standardized according to ČSN EN 60584-1 ed. 2 and are divided into two basic groups: thermocouples made of noble metals (types “S”, “R” and “B”) and thermocouples made of base metals (types “J”, “K” and “N”).
The design of the thermocouple sheath plays a key role, as it determines the sensor’s resistance to temperature, mechanical stress and chemical effects of the surrounding environment. From this point of view, thermocouple sensors can be divided into the following categories:
– sensors with a ceramic thermowell
– sensors with a metal thermowell (so-called rod-type)
– sheathed sensors
– cable sensors
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Thermocouple assemblies with double ceramic tube- outer ceramic C610 (Pythagoras) with a diameter of 24 mm and inner ceramic C610 (Pythagoras)
- for precious metal thermocouple (most often type S, R or B)
Thermocouple assemblies with double ceramic tube- outer ceramic C530 (diameter 26 mm) and inner ceramic C610
- for precious metal thermocouple (most often type S, R or B)
Thermocouple temperature sensors with double ceramic tube and measuring insert- outer ceramic C530 (diameter 26 mm) and inner ceramic C610
- base metal thermocouple type K or N
Thermoelectric temperature sensors with double ceramic tube- outer ceramic C530 (diameter 26 mm) and inner ceramic C610
- base metal thermocouple type K or N
Thermocouple assemblies with double ceramic tube- outer ceramic C530 (Lunit 20, diameter 26 mm) and inner ceramic C610 (Lunit 73)
- for precious metal thermocouple (most often S, R or B)
Thermocouple assemblies with double ceramic tube- outer ceramic C799 (Alsint) with a diameter of 24 mm and inner ceramic C799 (Alsint)
- for precious metal thermocouple (most often S, R or B)
Thermocouple assemblies with double ceramic tube- outer ceramic C530 (Silimantin) with a diameter of 26 mm and inner ceramic C799 (Alsint)
- for precious metal thermocouple (most often type S, R or B)
Thermocouple assemblies with double ceramic tube- outer ceramic C799 (Luxal) with a diameter of 24 mm and inner ceramic C799 (Luxal)
- for precious metal thermocouple (most often type S, R or B)
Thermocouple temperature sensors with single ceramic tube- ceramic tube C610 (Pythagoras) with a diameter of 24 mm
- base metal thermocouple type J, K or N
Thermocouple temperature sensors with single ceramic tube- ceramic C530 (Lunit 20) with a diameter of 26 mm
- base metal thermocouple type J, K or N
Thermocouple temperature sensor MTC4 with a single ceramic protective tube made of C799 (Alsint) ceramic, diameter 24 mm. Fitted with a base metal thermocouple, type J, K or N.
Thermocouple temperature sensor MTC4L with a single ceramic protective tube made of Luxal 203 ceramic, diameter 24 mm. Fitted with a base metal thermocouple, type J, K or N.