Answer / alpesh dalvi

in ultrasonic level transmitter ultrasonic waves are
transmitted & return sound wave recived time is to be
measured which is called as echo.if we installed level
transmitter perpendicularly then echos angle disturbed.so
that we cant get wave recieving time.

Answer / amit

because ultra sonic ray flow strat line so ultrasonic level
tranmitter installed in 90 degree.

what is scale factor of proximitor & unit of the vibration.

0 Answers   ADMA OPCO,

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we are using centum vp as monitoring with Dell precision work station T3600 but some times PC(s) are restarted automatically . how we can solve this problem? thanks

0 Answers   Oil India,

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why is negative range given to measure the steam drum level

2 Answers   Jindal,

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What is the use of temperature compensation?

0 Answers  

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Explain the difference between the types of input variables plc?

1 Answers  

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What are different types of valves?

0 Answers  

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Any Transmitter Range (Span value) start from 2?

1 Answers   Exxon Mobil,

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What do you do as a Engineering person EPC for Sizing&Selecting Control Valve?

1 Answers  

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I work on a electronic positioner transmitter 4211 at the field.I connect my multimeter in series to get the current output then I calibrate it to 4ma in 0% of position of the valve and 20ma in 100% position of the valve.My problem is in the field I get the correct output current based on my multimeter but in the dcs they only receive 40% in a output 20ma of this positioner.Then I try to simulate in this analog card and they receive the equivalent percent on the value that I simulated.Is ther any possibility to reset the zero and span of this positioner 4211 fisher.And what other possibility I can do to fixed this.This is my email add ( landicho_randy@yahoo.com )

4 Answers  

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i am going to attend ongc exam this coming june for Graduate Engineer Trainee post if anybody knows the question pattern or have experience plz share it with me

3 Answers   ONGC,

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Why using negative voltage in vibration measurement?

2 Answers  

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what is the relation between flow and pressure.for example relationship between level and pressure is p = phg like that i want ans for this question.and also how to calculate orifice sizing and flow transmitter. pls some one ans for this questions.

3 Answers   Orchid, SRF,

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