flow transmitter range is 0 -500 mmwcc but the transmitter
shows 12 ma for o mmwc instead of 4 ma ...how to solve this
problem when we apply 375 mmwc it shows 16 ma
Answers were Sorted based on User's Feedback
Answer / satya
1st ensure the tapping . the root valve. orifice range . tx range . then open the high side , open the low side drain the flow shoude be zero . if not trim the tx. and then. take it online
Is This Answer Correct ? | 7 Yes | 2 No |
Answer / dinesh
the transfer function should have been square root but the transfer function mentioned is linear which is as follows
y=mx+c where m is slope & c is the bias
to calculate slope
m={(y2-y1)/(x2-x1)} where
y2=16ma; y1=12 ma; x2=375 mmwc; x1=0 & C is 12ma at 0 mmwc
so y= (4/375)*x + 12
in order to get correct flow change the transfer function to square root in Tx
Is This Answer Correct ? | 2 Yes | 0 No |
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