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1)how we calculate the drum level? and how we select the
transmitter range?
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Answer Posted / jsindrajit
Drum level is measured by measuring the differential
pressure accross two tapings(Bottom & Top)in the drum by
using DP transmitter, whose HP side is connected with the
Taping coming from the bottom and LP side connected with
the taping coming from top.
HP side will have a pressure of Both the Steam Pressure and
Water Level. At the same time LP side will have only Steam
Pressure. Therefore the transmitter will reflect only the
Water level.
The range selection for transmitter depends mainly on three
factors i.e. Drum working Temperature, Drum working
Pressure and Difference of pressure between two tapings.
There are other factors also like Dade band, accuracy,
repeatability, response time etc.
| Is This Answer Correct ? | 5 Yes | 2 No |
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