Answer / amith.patil17@gmail.com

Calibration Can be Carried out By Calibration Instruments
such As For Pressure Transmitter,level transmitter the
pressure pumps with mA in Series or Can be used simply
HEART with a Pressure pump,By increasing the pump pressure
the master guage shows the indication of the Standared
pressure Corresponing to which mA reading canbe Obtained
check for incrasing and decreasing Valus for 4,8,12,16mA If
Error Occurs then Set a Zero or Span Adjustment,Simillarly
For RTD,T/C in Furnace is Carried out.

Answer / pankaj

the calibration of pressure transmitter is calibrated with
help of comparison pump or HART Protocol...

Answer / ram

Calibrate to any instruments like pressure transmitter by using the druk calibrator to build the pressure depends on transmitter range and measure the 4-20 ma it's increase or decrease have a span and zero settings .0_30bar like initially 4ma,8ma,12ma,16,20ma.and using hart communicator also

Answer / jadhavamit

Calibration of instruments are carried out under master equipment,they are calibrated under the "National Instrumentation Laboratory".
I can not tell u about the detail because it is under rule But i will explain it with example:

To calibrate a temperature Gauge-
The master equipment use is "Fluidless temperature Calibrate".
it work With out fuel so it is called Fluidless Temperature Calibrator the only thing u have to do is Put the End nod into the master equipment and initially set the temp. to 0degree cent. and step up to 30degree cent. with this see the reading proportionally in the Gauge no need to calibrate if it give +-0.2 reading. if it give deviation of +-5 then adjust the span and zero to set point result we been seen these is the method of calibration of temperature gauge.
Other example of master equipment are microprocessor based pressure calibrator,Macloid gauge etc.

Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?

0 Answers  

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what is absolute pressure and where use in process?

3 Answers  

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Q- voltage source of 12v is driving the circuit.if circut draw the current of 0.5A them source voltage will became 11.8v.what is the power dilevered by source when circuit draw 5A current ?

4 Answers   Ecil,

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I have got a call of IOCL interview for projects having 2yrs experience. What sort of questions should I expect in the interview?

0 Answers   IOCL,

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Why we are using sqare root in flow?

4 Answers  

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where i can get training in INTOOLS and PDMS in Delhi-NCR OR north part of India. please reply with ur ans. at arunsamkaria@ymail.com

0 Answers  

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How to find out turn down ratio of Pressure transmitter?

1 Answers  

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

6 Answers   L&T,

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how we can measure the interface level?is it possible to measure interface level with dp or pressure transmitter?

2 Answers  

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in split range control valve,two valve should be in two different line and that should have some distance,and we have only one positioner feed back link.so how we connect one feed back in two control valves?if you have picture please forward me.my email id kb.syamkumar@gmail.com

2 Answers  

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HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

0 Answers   ABB, NTPC,

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on which principle control valve works?

3 Answers   Lupin, Reliance,

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