What is the basic principle of vibration measurement by BENTLY NEVADA vibration measurement system? and Why it gives the -ve voltage output?

14 Answers   Ensol, GNFC, Reliance, Siemens,

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What's the difference between cold loop test and hot loop test?

5 Answers  

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how is work pressure switch& level switch?what is the principle of this?

0 Answers   Binani,

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SIR MAY I KNOW IF RADAR TYPE LEVEL TRANSMITTER SHOWING IN THE FIELD 0 % LEVEL AND IN DCS SHOWING 100% THEN WHAT IS THE CAUSE I CLEAN THE CHAMBER & TAKEN ONLINE BUT ONLY ONCE ITS BECOME ZERO IN DCS BUT AGAIN 100% SHOWING IN DCS,THEN I REMOVE THE POWER SUPLLY AND CONNECT IT AGAIN .IS IT OK BUT STILL IN THE DCS ITS 100% AND ON THE DISPLAY ITS INITILAZIATION PLEASE HELP ME READRING THIS?

4 Answers  

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A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

0 Answers  

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On drum level, why we are using air to close Control valve?

4 Answers   L&T,

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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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Definition of reverse and acting controllers:

0 Answers   Monnet,

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Which type of pressure can be measured by primary elements?

0 Answers  

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calibration of instruments.

11 Answers   ONGC,

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how micro-processor and micro controller different from architecture

3 Answers   Bhushan Power Steel,

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Explain operation of Haskel pump.

0 Answers   CCIE,

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