Answer / s.arunraja

Hello Dear first check the Calibration Range of Transmitter,
Range should be -xxx(495) to 0 mmwc. for 0 mmwc 20 mA will
be come.when you fill the water in condensate pot 4mA wii
be come because it's closed vessels

Regards
S.Arun Raja

Answer / sagar khandekar

First check
range of
transmitter if
ok then check
+ve & -ve side
of line if again
ok then check
4-20 mA current
means
calibration if
again ok then
check program
and check scale
range. Follow
these step 100%
confirm solve ur
prblm.

Answer / r.murugan

Dear haider
your transmitter calibration is perfect before charging the tramsmitter you have to fill the water in the condensing pot at low side of the tranmitter

boiler is shutdown condition please confirm DRUM VENT ISOLATION VALVES ARE OPEN

IF DRUM VENT ISOLATION VALVES ARE CLOSE YOU WILL NOT GET CORRECT READING

Answer / ikraamh5

engineering level

Answer / ashish mahadik

U have to apply WET LEg method for Differental Pressure
type level mesurmetnt.Keep ur wet leg(Lo side of tx always
filled with condensed water.
Put the range in tx.-19.5 inches of WC to 0 inches of WC.
see the result but make sure that ur wet leg should always
filled with water.otherwise ur tx l go to saturation and
give u contunous 20 mamp that is level is full.

Sir i am preparing for PSU exam for ONGC but i am not able to get the appropriate syllabus and previous year question papers. Kindly send me the same, that will be a great help from ur side. OR if anyone can plz send me the papers and syllabus please.

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