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In pressure gauge if the throttle valve is not working or not showing exact reading how to rectify?

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Question added by javeed shaik , Project manager onsite , Food safety and standards authority of india
Date Posted: 2016/04/09
Adnan Ahmad
by Adnan Ahmad , Senior Electrical Engineer , Engro Polymer and Chemicals ( Petrochemical Plant)

First of all as per standards double valve isloation should be available in steam duty or any other high pressure medium even on feed water. 

First of all isolate the PG and then flush the line. The PG should read zero if there is zero error then calibrate the PG. then once again deisolate the PG it will read accurately.

girish kumar
by girish kumar , ENGINEER , BGR ENERGY SYSTEMS LTD

FIRST ISOLATE THE GAUGE AND FLUSH IT. IN CASE OF ANY READING ERROR, DO ZERO ADJUSTMENT AND CALIBRATE THE GUAGE.

mohammed abdul quddus mohd
by mohammed abdul quddus mohd , BHIS ENGINEER , SIEMENS DEMATIC MIDDLE EAST LLC

You would need to use "Zero adjustment screw" to make it zero and clean the manifold, calibrate again.

 

Ahmed Akasha
by Ahmed Akasha , MEP Project Engineer , Bnaa AL Njah LLmuqaqalat W.L.L

Calibration or adjustment is enough to fix the deviation of readings  

Waqas Ahmad
by Waqas Ahmad , Senior Technician ( Instrument and Control) Level-5 equivalent to Engineer , Pakistan Petroleum Limited

 isolate pressure gauge and then flush it.if still not showing correct valve dismantle and re

 calibrate.

MOHAMEDIGBAL ABDULRAZACK
by MOHAMEDIGBAL ABDULRAZACK , Production Operator , Cairn India Ltd. (CIL)

isolate that pressure gauge and then flush it upto zero pressure value.

javeed shaik
by javeed shaik , Project manager onsite , Food safety and standards authority of india

If the throttle valve is not working and not showing exact readings connect the pressure valves to Bourdan Guage and pump for two air pressures and the throttle valve get resetted and start your calibration.

 

 

Sajid Ahmed
by Sajid Ahmed , Automation Engineer , Mahwin Engineering

connect gauge with standard pressure and check out its milliAmps. and calibrate it by adjusting screw.

ahmed Jibril Ahmed
by ahmed Jibril Ahmed , Electrical Technician , Egypt hydrocarbon corporation

First of all isolate the PG and then flush the line

The pressure gauge should read zero

if there is zero error, then, calibrate the pressure gauge

need for calibration the gauge manifold otherwise adjust the small screw for the pointer if necessary

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