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why the steam drum and deaerator level transmitter range is
in negative MMWC to zero
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Answer Posted / sam
In both cases you are using a wet leg configuration with the
DPT. In the steam drum if you use the old fashion way by
changing the HP and LP legs around you will get a positive
mmH2O reading. If you use a piped SMART Tx or a SMART
capillary type DPT, you will get this negative mmH2O readings.
I have already done a writeup on this so go and look at
previous questions.
In the deaerator there is a vacuum but again the same wet
leg is done. I have already done a writeup on this vacuum
applications as well so go and look at previous questions.
Good luck
| Is This Answer Correct ? | 7 Yes | 30 No |
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