what is mean by hot loop and cold loop testing, whts
different between both

Answer Posted / mrmk

Cold Loop checking: Checking of wires continuity of
respective field instrument-Junction box-DCS/PLC
marshalling panel terminal.

Hot loop checking: Once you powerup your field instrument
through DCS/PLC system, by stimulating process input from
respective field instrument and cross check its responce at
DCS/PLC sytsem

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