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what is the use of glycol filling in seal pot (or)
condensate pot in instrument impluse line?
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Answer Posted / mohammad iftikhar
Seal pots (sometime called condensate pots) are used
to allow a liquid seal between the instrument and flowing
gases such as steam. Their function is to keep the
liquid level constant in the impulse tubes. For example,
in boiler liquid level applications the high pressure (HP)
side of a differential pressure transmitter is connected
to the vapor space on top of the steam drum. Steam
condenses in the chamber or seal pot and fills the impuls
eline with condensate. The seal pot is located to
allow the condensate to drain back to the source thus
keeping the liquid level constant.
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