what do you mean by Loop checking ? What are the cold loop check and hot loop check? what are the difference between these two loops?

1 Answers  

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A pressure differential gauge type of instrument has a manifold with 2 isolation valves (hp and lp),2 vents(1 each for hp and lp) and 1 equalizing valve. Determine the position of each valve(either fully closed or fully open) when troboulshooting to: 1. zero the transmitter. 2. determine if there is a block in the impulse line. 3. determine if the gauge is functioning properly. The process fluid is water.

1 Answers  

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What is Process portal A(PPA)?

1 Answers   ABB,

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how to draw a flowchart for swapping two numbers using bit wise operators?

1 Answers  

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Why we used cage in control valve?

8 Answers  

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what is the input to be given digital temp controller during the the calibration time?

2 Answers  

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NPN transistor, SCR, Zener diode, LED, Varactor diode, Vortex meter, RTD, Resistor, Crystal

0 Answers   CCIE, RTD,

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why we use -ve voltages in vibration prob?

1 Answers  

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how in the 2 - wire transmitter, 24v supply and the 4ma signal gets in the same path?

1 Answers   Yokogawa,

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i saw in my company drawing seat cable size as mensioned like this 12p*15 sqmm,12t*1.5sqmm, 9c*1.5sqmm. now what my que is what is mean by p , t , c.

3 Answers  

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How digital input and digital output 's are working in dcs

0 Answers   BBV, Indiabulls,

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micromotion flow meter used for

3 Answers   Reliance,

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