Answer / carl_ellis

An atmospheric tank is likely to collapse inward from the
vacuum created by a closed or plugged vent when liquid is
removed from the tank because an atmospheric tank is not
designed to withstand pressures that a pressure vessel can
handle.

Carl Ellis
Measure First

tell about various protocols used in different plcs

3 Answers   Emerson, Samtel,

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What is the use of GMV in turbine?

0 Answers   Hamsco, Maruti Suzuki,

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difference between vaccum and draft

0 Answers  

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how can loop single 4-20 ma to two isolation amplifier? i mean i have two isolation amplifier with 4-20 ma input and 1-5 v output.can i done series connection ?

1 Answers  

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what is span adjusment of transmitter? what is the function of positioner/

2 Answers   Kent,

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what is the standard controll pressure

1 Answers  

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I have seen the Temperature element (T/C & RTD) installed in process line on 45 degree position, Why? What it mean? How many types of tapping position for temperature elements?

4 Answers  

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what is function of vibration, and how is it work, explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

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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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what is hart communicater? can u give brief explanation about this issue?

3 Answers  

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What is open loop checking and close loop checking

1 Answers   BARC, NTPC,

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What is the difference between instrument earthing and normal earthing? and why is it necessary to do so?

3 Answers   Atul,

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