diffrence b/w accuracy and precision?

4 Answers   HPCL,

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why we use only 4 to 20ma other than 0 to 16 ma

5 Answers   Invensys, Systech,

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what do you know about Foundation Fieldbus?

1 Answers   CCIE,

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where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia

0 Answers  

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What is the basic difference between Modbus and CAN Open Protocols

0 Answers  

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How hart protocol can be connected with control valves?

0 Answers  

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how to calibrate corollaries (Mass flow meter)?

0 Answers   Honeywell,

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what is the difference between 3,4 wire RTD sensor?

6 Answers   HTA Instrumentation,

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what are the steps to follow force a particular input or out put from ics triplex esd system?

1 Answers  

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How to calibration coriolis flow meter?

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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What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?

0 Answers  

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