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 % .

we are used SAMSON 3730 Smart positioner.please tell me how to calibration this.

1 Answers   TCCL,

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what is the difference between dcs & plc

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CONTROL VALVE OPERATING IN MANUAL BUT NOT IN MANUAL. WHAT SHOULD BE THE PROBLEM ?

0 Answers   GSC,

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when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

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in a power plant main steam flow is volumetric or mass flow? is it required compensation?

1 Answers   Wartsila,

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how do u calibrate the vacuum transmitter if it shows more reading

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how can we measure the pressure in underground cooling water pipeline by using pressure transmitter?what about the tapping position?

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HI FRIENDS IHAVE QUESTION 1.WHAT IS PARTIALSTROKE TEST?WHY IT IS USED ON ESD ON OFF VALVES?

3 Answers   KNPC, Rotork,

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Please anyone answer my question, what is the difference between single acting and double acting control valve, in what condition we better choose single acting rather than double acting

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in which mode of the zener diode act when load voltage is approximately constant

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why we are not using the turbine flow meter in the steam service?

0 Answers   Jaypee,

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