For heat treatment processes, continuous quality can only be ensured by the regular calibration of control or charge thermocouples. The illustrated calibration set can be used with every tube furnace for the professional calibration of thermocouples.

The thermocouple calibration set is mounted in a compact housing and consists of a temperature display unit for two thermocouples, a reference thermocouple with compensation wire and a plug connection for different types of thermocouples. Both the display unit and the whole measuring circuit to the reference thermocouple are calibrated ex works and are supplied with a calibration certificate.

The set is used with a tube furnace, e.g. model RD 30/200/11. For calibration, the furnace is set for one temperature. From one side, the reference thermocouple is inserted into the working tube. From the other side, the thermocouple to be tested is positioned in the tube. The measuring points of both thermocouples must face as close as possible to each another. Depending on the furnace model, a ceramic temperature compensation block can be offered for the positioning of both thermocouples. After a defined period of time, the temperature of both thermocouples can be read off from the display unit of the thermocouple calibration set and be compared.

• Compact housing
• Single-phase connection
• Digital display unit for the test thermocouple and the reference thermocouple, with calibration certificate in steps of 100  °C
• Reference thermocouple, type N, with calibration certificate (for 3 temperatures)
• Thermocouple inputs type K, S, N for test thermocouples. Only one input per measurement is possible.
• Furnace (RD or R model) has to be ordered separately

Additional equipment

• Reference thermocouple type K or type S
• Further thermocouple inputs for specimen, e.g. type B, type J or type R
• Fiber plug with passages and ceramic temperature compensation block for the support of the thermocouples in the test furnace