Insulation for pressure sensors
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The pressure transmitter is installed outdoors in Shandong, and there is a condensation tank. How should insulation be provided in winter, and does the insulation need to be removed in summer?
I’m not sure about the average winter temperature where you are; is heat tracing available? Insulating foam and aluminum foil will suffice. In summer, it’s sufficient to turn off the heat tracing; there’s no need to remove the insulation.
It is used to measure steam at 300°C, and there is no heat tracing treatment at present.
If the pipeline is heated with steam, then the instruments should also be heated with steam; insulation foam and aluminum foil are used as well； If the pipeline does not have heat tracing, consider using electric heat tracing for the instruments, along with heat tracing cables and temperature control systems.
Heat retention is secondary; heat tracing is essential! At least water heating! Moreover, the heat tracing from the pressure tapping base to the transmitter diaphragm box must be in place! ! !
In Shandong, instruments must be insulated with heating in winter; it is sufficient to turn off the heating when temperatures drop, without the need to remove it.
I’m using ethylene glycol antifreeze; I haven’t turned on the heating system, but there is insulation in place. However, I think the insulation isn’t necessary, as ethylene glycol antifreeze has a very low freezing point, which is sufficient for normal use. It’s sufficient to prevent freezing of the pressure conduit from the condenser to the pressure measurement point – ensure it has a sufficient slope and adequate insulation
If the pressure tapping pipe is short, within 1 meter, insulation alone is sufficient; if it is very long, heating must be added
I used to live in Shandong and have experienced this situation before; insulation is necessary in such cases. You can consider using electric heating elements along with insulating material, and you can turn off the heating elements in summer