Identification of control valve parts.

0 Answers   CCIE, Oil and Gas Jobs,

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How does one detrmine the direction of movement of core in an LVDT?

2 Answers   Honeywell,

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I HAVE PRESSURE TRANSMITTER WITH TWO WIRES 24 VOLTS SUPPLY.IF TRANSMITTER WILL GIVE SIGNAL TO THE DCS WHAT HAPPEN TO THE 24 VOLTS POWER SUPPLY IT WILL DROP OR REMAIN TO 24 VOLTS POWER SUPPLY.

3 Answers  

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What is surge and how is it prevented.

1 Answers   ADMA OPCO,

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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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What is the meaning of Feedback? How many types it is? Explain it?

2 Answers   Bharathi Cement,

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Why we use the double acting control valve in flow line?

3 Answers  

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what is the daily job of an instrument commissioning supervisor

1 Answers   Petrofac,

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can u please tell me the different types of valve uses and wt purposes it is used ~!(controlling the flow other than that which valve should be used in what place)

2 Answers  

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what is the reason for flow fluctuations happen on differential flow transmitter during in service

2 Answers  

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what is sliding spool valves?

0 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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