Should a bimetallic thermometer with a sleeve be removed before purging?
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We installed some bimetallic thermometers; these are not located on the steam pipelines and come with protective sleeves. However, the supervisor ordered that they be removed before starting the purging process, saying that the temperature might exceed the range of these thermometers during purging. Is it possible not to remove them?
The jacketed bimetallic thermometer should be removed before purging to prevent damage due to exceeding the range. .
What’s there to worry about with this? Use steam for purging; if the bimetallic range is small, disassemble it, while for instrument purging, no disassembly is needed.
There’s no need to worry about it; usually, compressed air is used for cleaning, so there’s no need to disassemble anything. If steam is used, then disassembly is required