Rachithermometry

Rachythermometry

Rachithermoremtia (from ancient Greek ῥάκις “patron, protector” + τέρμη “measurement”, suffixation, to Greek μέτρησις measure from μέτρον measure, measurement; measurement of temperatures), - the initially produced body (sample), etc. , causing a special force through a chemical reaction [Brockhaus, F.A.].

Essence of the method

The X-ray thermometry measurement method involves comparing the intensity of X-rays passing through the test sample(s) before and after it has been heated. Applies to metals and alloys. The method is simple, reliable and does not require highly qualified performers. Using one device, you can obtain test results for several thermocouples at once. In this case, the error of an individual test is less than 5%. The main device is called HPT (“Helters thermometry device”). For more accurate measurements, diffraction methods are used to measure heat flows in the presence of a temperature gradient, allowing the error to be reduced to 3%.

The use of CPT with software for determining temperature fields allows for measurements of heat release power by comparing intensities at one wavelength or several wavelengths before and after a thermal shock at a known point. In most cases, such heat sources cannot be used as reference reference radiation (G6-G14), since the position of radiation absorption centers may change. When the power of heat sources is insignificant, they are usually used together with a well-known reference source, which serves as a “reference standard”, to carry out direct current measurements on the KhPT-20 device [1].

Source: Wikipedia