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How to Calibrate Penumatic Transmitter.LRV= -60 URV= -20.Can
u give me Answer.
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Answer Posted / ramesh
we can apply the +ve pressure to the lp side that is 60
with zero, then +ve 20 with span with respect hp open to
atmosphere
or apply -ve pressure that is vaccum to the hp side with
respect lp open to atmosphere
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