Does the length of the temperature transmitter probe affect the accuracy of temperature measurement?
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Does the length of the temperature transmitter probe affect the accuracy of temperature measurement?
Does it refer to the depth of insertion into the medium? The relationship has deepened
To use an imperfect analogy, during the Spring Festival when we stay at home to prevent the spread of viruses, I believe many people used mercury thermometers to take their axillary temperature; if the thermometer wasn’t inserted properly, the reading would be inaccurate. Similarly, if the insertion depth is incorrect, the operating temperature will be completely inaccurate.
If a thermometer with L=200 and another with L=280 are inserted at the same location on the same device, will they show the same temperature reading?
Whether the measurement is accurate depends on whether the sensing end of the thermometer can make full contact with the medium. If both 200 and 280 can maintain full contact with the medium, and the temperature is relatively uniform throughout the medium, then there is no difference. Therefore, the length of the thermometer that needs to be chosen depends on the specific conditions at the site and the process requirements. For reference
The temperature of the medium is not uniform; there are differences. The flow state of the medium within the pipeline, as well as the distance from the pipe wall, result in temperature variations. As someone who works on instrument maintenance, I’m not able to explain the specific scientific reasons for this
With different temperature distributions and depths, the measurement results will certainly vary.
Sure, there are such ones. However, it depends on the specific process medium, and when selecting one, attention should be paid to the diameter of the thermometer sleeve – if it’s too small, it can easily be bent or even broken by the medium; we’ve encountered this situation before.