Answer / amit srivastava

According to flapper nozzle system, the flapper nozzle gap
and output of back pressure is nonlinear.But if we observe
the nozzle back pressure and flapper nozzle gap curve, at
3-15 psig output the curve is linear.

Answer / nirmalyabasu

this signal is globaly accepted as a transmitable pneumatic
signal so for every pneumatic works this signal is accepted
or used.

Answer / poorni

we cant find the error wnen it is in null conditions.so the
pressue range starts from 3 psi and most of the instruments
does not exist more than 15 psi.

Answer / ch amir islam

Normally we use the CVs that have thier bench set more than
3 to 15 PSI but some time at low pressure line we use CVs
that have bench set of 3 to 15 PSI so we use the i/p of a
possitioner as o/p for traveling of CV but in normal cases
we dnt have i/p of possitioner below than 15 PSI.

Answer / ch amir islam

Normally we use the CVs that have thier bench set more than
3 to 15 PSI but some time at low pressure line we use CVs
that have bench set of 3 to 15 PSI so we use the i/p of a
possitioner as o/p for traveling of CV but in normal cases
we dnt have i/p of possitioner below than 15 PSI.

in the pipe line if the control valve fails to respond to controller action,by what means we can stop the flow in the pipe line ?

9 Answers  

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I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

0 Answers   SRAAC,

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What is maintenance planning?

3 Answers   Qatar Airlines,

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What is Burnout feature in a recorder?

1 Answers   CCIE,

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what are the difference between conventional and smart transmitter.

1 Answers  

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HELLO FRENDS ,, I M IN THE MIDST OF TROUBLE .. JUST LITTLE HELP ME... SUPPOSE ,, I HAVE A CLOSE VESSELE TANK ( HEXANE MEDIA ) ,, I M USING ROSEMOUNT 2051 DPT FOR LEVEL APPLICATION .. ITS CALIBRATE RANGE IS.. . 0 TO 950 MMH20 ..I DID CALIBRATED DPT WITHOUT REMOVING IMPULSE LINE OF HIGH AND LOW TAPPING.. & WITHOUT DISTURB 3 WAY MANIFOLD..!!! BUT ,,, DURING CALIBRATION I SELECT RANGE BY HART LRV IS 900 MMH20 & URV IS 1300 MMH20 ,, BUT ,TANK LEVEL SOMETIMES 100 % AT 1100 MMH20 , SOMETIMES 1300 MMH20 ..IN THIS CONDITION .. WHOLE LOOP FAILED ,, MAIN THING IS THAT ,, HOW TO CUSTOME RANGE SELECT ?? AND IF I USED RANGE OVER THE ORIGINAL CALIBRATE RANGE ,,,THEN WHAT ERROR WILL BE COME ??? HOW TO ZERO CALIBRATION OF DPT... HOW TO ZERO TRIM BY MANIFOLD ?? AND FOR TANK LEVEL PURPOSE ... WHICH UNIT I CAN USE ??? IS THERE ANY CALCULATION OR CALIBRATION .. IF YEH .. THEN PLZ JUST GIVE ME CALIBRATION STEPS FOR DPT.. THANKS YOURSSSSSSS

1 Answers   Torrent Pharma,

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Introduce yourself which is not present in your biodata?

0 Answers   GAIL,

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how to calibrate motorized operated valve?

1 Answers   Bilt, Jubilant, SRF,

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what is the difference between E/P positioner and I/P positioner in control valve , in which application the respective positioner are used in.

1 Answers   ABB,

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Can anyone provide me the details of GAIL test paper?What is the format and what type of questions will be there? my id-princegnb@gmail.com

1 Answers   GAIL,

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what is the difference between the microcontroller and PLC?

9 Answers   HAL, Havells,

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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??

0 Answers  

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