Answer / muhammad ali

Datum line or point is a reference point for level
measurement.

Answer / ravi

Which point is we can take a refrance point for hight of
level .
Means our level is XXX mm from Datum line .
The bottum of measerd level tank is Datum line

Answer / elsayem

datum point is the rerence point when we measure level

Answer / imran

It is the refference point of any vessel from where zero
level start above bottom of vessel.For level measurement it
is zero level and head pressure is measured at this point.

I have a orifice installed in plant which is design for 0~100 inH2O for 0~80MMSCFD, now due to process change the maximum flow is change to 120 MMSCFD so for this new process value what will be the DP across orifice.

1 Answers  

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In vortex flow meter how can measure the frequency of vortex generated by vortex flow meter

4 Answers   Cadila,

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a pressure transmitter with a range of 0 to 2500kpag has a specified accuracy of 0.5 % of span.It is to be calibrated using a comparison gauge to have an accuracy of 0.1% of span.The comparison gauge has a range of 0 to 3000kpag What is the accuracy ratio? is this ratio acceptable?

1 Answers  

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what is cascade loop and how it work and why it used instead of PID single loop? In cascade, Which loop is faster and slower? Please explain with loop drawing and example...

2 Answers   Honeywell,

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What is the meaning of wet leg

0 Answers  

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why use 4-20mA in the field of instrumentation?

8 Answers  

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What is the difference between mmwc and mmwg?

0 Answers  

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what is SIL 1 2 3

0 Answers   KOC,

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what is difference between call out and call log

0 Answers   Petro Rabigh,

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Name different parts of a pressure gauge.

0 Answers  

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when placing a vent or drain hole on an orifice plate should you measure from the center of the bore up or down for the vent placement?

0 Answers  

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Explain the working of rota meter.

0 Answers  

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