is motorized valve closed when power shutoff?

0 Answers   Unilever,

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What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?

0 Answers   KNPC,

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Is there any temperature compenasation for the air flow from FD fan & SA fans which supplies air to the Boiler?

2 Answers  

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while i check zero check for dp flow transmitter some fluctuating came (0 to 458 kg/h) what is the reason?

0 Answers   Petronas,

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Turbidity analyzer working principle ?

0 Answers   Tata Steel Limited,

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Explain about the leakage class of the control valves

0 Answers   CCIE,

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Hi friends, from Aug 4th onwards iam getting spikes for analog inputs in our DCS for a period of 800ms. I throughly checked every thing, finally i found that the DI, DO's from MCC panels shields are terminated in the Signal Earth where Analog Input signals shields are terminated. Is there any problem with this type of termination?. i checked the induction voltage from MCC and getting around 25VAC, please suggest me in this concern. Our plant is 8months old only. DCS is Siemens Make Simatic PCS7, and the transmitters are Yokogawa make.

1 Answers  

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Can I calibrate the Electromagnetic Flow Meter on line and How.

0 Answers   SEWA,

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How can we test a bently nevda 3500/42M accelerometer monitor card by simulating it with test equipment?. what king od of signal (milli volts or volts or or resistance ) we should feed in the terminals of the card?

0 Answers  

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my data card only does run in my mobile so how can change it that it run other mobile & computer and i can stor data in my data card

0 Answers  

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How many input(Analog and digital) and outputs(Analog and digital) are there in DELTA v DCS Version 7.0?

2 Answers  

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(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.

0 Answers   ADMA OPCO,

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