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what is procedure of calibration of remote seal
transmiter, botom to top flanch 850mm, fluid liquid
density .73, transmiter fixed on a fractionation colum,
under vaccume 10mbar
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Answer / yomama
Your question suggest you are using a "Differential Pressure
Transmitter" in which case since the -10 Bar vacuum is
applied to both the Hi and Low legs the -10 Bar vacuum is
neutral the Transmitter
In that case we merely multiply the distance (850 mm) x (.73
SG) = 620.5
| Is This Answer Correct ? | 1 Yes | 0 No |
If you installed the remote seal transmitter at flanges,
then in case empty tank /vessel, the transmitter will
showing -mA. so do the followings:
1. Make transmitter 4 mA in this case(without any pressure,
only lower low leg remote seal pressure acting)
2. Apply 850 x 0.73 =620.5 mm of water to high side of
transmitter flange and set transmitter out put 20 mA.
aftabmazari@yahoo.com
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / yomama
Your question suggest you are using a "Differential Pressure
Transmitter" in which case since the -10 Bar vacuum is
applied to both the Hi and Low legs the -10 Bar vacuum is
neutral the Transmitter
In that case we merely multiply the distance (850 mm) x (.73
SG) = 620.5
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / ys
close the both hp and lp iso valve(so that any pressure
should not act on tx diaphragm). now measure the input
pressure in mm by connecting hand communicator to tx.. this
is the LRV.now measure span(ie here it is 850mm).multiply
span with liquid density(ie 850*0.73).we will get 620.5.
this is your URV
| Is This Answer Correct ? | 0 Yes | 0 No |
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