Testo Class-A Air Probe Thermometer 0609 1772

Description

There are basically two main methods used for contact temperature measurements on objects. In the case of penetration/immersion measurements as well as air temperature measurements, measurement is only possible with contact probes. There are some applications where contact measurement is the most suitable method for measuring surface temperatures while there are other
applications where non-contact temperature measurement has proven to be more suitable. A combination of both methods in one instrument is often found to be ideal. Temperature measurement using thermocouples is based on the thermoelectric effect. Thermocouples consist of two wires welded together. The wires are made of different metals or metal alloys. The basic values of the thermoelectric voltages and the maximum tolerances in thermocouples are defined in the IEC 584 standards. The most common thermocouple is NiCr-Ni (type designation K).