Explain the difference between differial pressure & delta pressure?

1 Answers  

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one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg but when we tight this sensor at thermowell end it goes down to 90 deg & when remove from the thermowell(but sensor end dipped in well) showing actual reading, what is reason?

3 Answers  

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i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.

0 Answers   OEG,

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what master plc do?

2 Answers   ISRO, Yokogawa,

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In instrumentation standard we use 4 to 20ma for transmission , why cant we use 3 to 19ma ?

1 Answers   NSH,

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What types of thermocuple are mostly used?

6 Answers  

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can install leveltrol in steam drum for measurment the level of steam drum? if not then why?

1 Answers  

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WHAT IS AN INTERLOCK SYSTEM ?? HOW THEY WORKs ?? WHERE IT IS USED ??? MAINLY ??

2 Answers   TATA, Tata Steel Limited,

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what is the difference between servo valve & proportional valve

1 Answers  

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To find closed tank level by DP transmitter , how to findout its range.and insomeplace they using range like - 1500 to +1500 mmwc why not 0 to 3000 mmwc. how they spilit they range for minus and plus.and why?

1 Answers   Kuwait Oil Company,

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What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers  

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In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

0 Answers   Reliance,

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