Answer / manoj

in closed tank measure nozzle to nozzle distance
lower nozzle will be HP Since liquid will from bottom and reach to top level so that top level so lower to upper nozzle distance is1000mm and if its wwater multiply by density so its 0 to 1000*density(1) if its vapour or steam in it
use condesing pot so hen you fill initally so pressure apply on lp side so that why we have to consider -1000mmec to 0mmwc so once water filled in line it becomes o%(equal pressure) after that open upper and lower vale now once process level start level start to increase from hp so its 0to 100% in trasnmitter that is -1000mmc to 0 mmwc

Answer / kutti

The closed vaseal level transmitter range is identify ulta upper hp ,down lp;(negative range )
The open vesal level transmitter range is upper lp,
down hp .(positive range).

Answer / hussain

in dp level we have urv n lrv from this value we have made (urv-lrv) . so we can get total span from this i,e full range from 0 to 100 % .

Calibration of controller (pneumatic)

0 Answers   CCIE,

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what is metal of piston ring

0 Answers   MahaGenco,

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what will happen if transmitter wire get shoted?

2 Answers   Sabic,

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sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com

0 Answers   ONGC,

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A DP Endress and Hauser flow transmitter is always tripping pump at low flow. set point is 74 cubic meter/hr. Thorough impulse line flushing and zero calibration has been done, yet problem persists. What do you think is the problem and how do you rectify this fault?

5 Answers  

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why flow transmitter showing 2.2ma?

2 Answers  

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how to measured k type thermocouple temp.

3 Answers   NTPC,

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What are the materials use for COntrol Valve body?

1 Answers   KNPC, Qatar Petroleums,

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what is pyrometer? which purpose it has to be used?

2 Answers  

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what is the different between plc and dcs ? I know full name of this two but I want to know what structure and working style and speed I/O capacity and controller difference?

2 Answers   L&T,

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A pressure differential gauge type of instrument has a manifold with 2 isolation valves (hp and lp),2 vents(1 each for hp and lp) and 1 equalizing valve. Determine the position of each valve(either fully closed or fully open) when troboulshooting to: 1. zero the transmitter. 2. determine if there is a block in the impulse line. 3. determine if the gauge is functioning properly. The process fluid is water.

1 Answers  

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Why we are using sqare root in flow?

4 Answers  

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