basic connection and principle of axial shift sensor n differential sensors in tubine describes n draw......

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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.

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How does milli volt is created in themocouple?

2 Answers   Jaypee,

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When a field input to plc is coming from 400 to 600 meters and the input is in 24 V DC? So signal cable of which cross section i should select for proper signal to plc?

5 Answers   Exxon Mobil,

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there is one orifice plate already installed on 3" line, but my previous engineer(who is not working here) removed that tx, but now i want to take it in to the process, so now what i have to do now? flow fluid is hytherm oil of temp. 260deg & pressure is 3bar.

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Why any transmitter signal is 4-20 mA only Why is started from lower range 4 mA and upper range is 20mA.

5 Answers   Edac,

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What is the working principle of sox, nox analyzer?(opacity monitor) Otherwise how to measure the sox,nox?

1 Answers   Thermax,

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How INtools is useful for routine Instrument maintenance?

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On LPG sphere tank we used LIT for level indication.High side port is connected to the bottom of the tank while low side port connected to the top. I would like to know how to fill the glycerin on its low side with two condensing pot installed,one from top and the other one for its drain line.Please I need your expertise...thanks

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Can any one tell me what type of question asked for instrumentation and control interview panel??? pls mail ramashankar.goel@gmail.com

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i want know about capillary type LT transmitter installation. we can install any location in between to HP and LP leg?

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Is there any relation between Artificial Intelligence and Instrumentation?

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