Інвентаризація переваги і недоліки безконтактність температура вимірювання прилади
Non contact temperature measuring instruments are designed based on the principle of thermal radiation of objects. When measuring, the temperature sensing element is not in direct contact with the tested object and is is usually used to measure the temperature or surface temperature of high-temperature objects that move, or react fast above above 1000 degrees .
Its переваги are:
(1) широкий температура вимірювання діапазон (теоретично без верхня межа), придатний для високої температури вимірювання;
(2) During the temperature measurement process, it does not damage the temperature field of the measured object and does not impact the distribution of the original temperature field;
(3) Можливість of вимірювання температура of moving objects;
(4) Small thermal inertia, short response time of the detector, fast temperature measurement response speed, about 2-3s, easy to achieve fast and dynamic temperature measurement. Under certain specific conditions, such as nuclear radiation fields, radiation can be accurately totterly and reliably measured.
The disadvantages of non-contact temperature measuring instruments are:
(1) It cannot directly measure the true temperature of the tested object. To obtain the true temperature, emissivity correction is required, and emissivity is a parameter with complex influencing factors, which increases the difficulty of processing measurement results.
(2) Due to non-contact. The measurement of radiation thermometers is illly influenced by the intermediate medium. waiting is under industrial site conditions. the The surrounding environment is relatively harsh, and the intermediate medium has a greater impact on the measurement results. in this regard, the selection of the wavelength range of the thermometer is very is very very important.
(3) Due to the complex principle of radiation temperature measurement, the structure of the thermometer is complex and the price is is high.
