Answer / raj

analog load cell does not gives accurate o/p because there
will be changes in the o/p.so by using digital load cell it
can give accurate o/p and it uses amplifiers fir the
rectification of the signals.

Answer / santosh gawande

in digital loadcell the a/d converter ( bridge amplifier is
near to the strangauges so signal op is correct

in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

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Can i convert 230v ac to 24v dc by using a relay?Instead of Smps is it possible? What is relay logic in plc ?? How it works?

2 Answers   Infotech,

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what is the imbustion control loop

0 Answers   Manali Sugars,

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we have LPG spherical Tank and we want to install DP Xmtr for level measurement.below are the physical measurements Total height of tank is 1850 mtr but 0% level is 1000mm above bottom and 100% level is 450 below upper side.What is the LRV and URV and please mention the formula .The SG of LPG is 0.53 and Wet Leg method will be used.

7 Answers  

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i am going to attend ongc exam this coming june for Graduate Engineer Trainee post if anybody knows the question pattern or have experience plz share it with me

3 Answers   ONGC,

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I want to measure and control level in tank of size 10*5 filled with gasoline, so plz give me the solution with clear details. how to select transmitter and sensors.

0 Answers  

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How can you convert an SR Flip-flop to a JK Flip-flop?

1 Answers  

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what is stability

2 Answers   IOCL,

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what is o2 analyzer and how it measured ,what is the role of this analyzer in cfbc boiler...

0 Answers   Mittal Steel,

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what is maximum vaccume?

4 Answers  

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which type signal in & out in dcs

4 Answers  

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What is modbus?

0 Answers  

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