Answer / vasavi

Just adjust the zero or span screw which is located
transmitter side

Answer / tang

Use HART/Field communicator is the best way. Will more accurate then the manual way (zero/span screw adjustment)
Can perform the 5 point checks afterward (As Left measurement).

i have one absolute pressure transmitter for the range is -400mmhg to 400mmhg. If i do the zero trim at atmosphere the transmitter should be give 4ma or 12ma? which one is correct?

2 Answers  

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Anybody can tell me  how to convert mmHg2o /psi to scfm  please give me formula of conversion

0 Answers   Samsung,

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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 difference between two wire transmitter and 4- wire transmitter

3 Answers  

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what is field bus system. need defination

3 Answers   Takreer,

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Somebody tell me in what way i need to prepare for csio pgrpe(adv instrum eng)interview?what all the quest can i expect?

0 Answers  

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what is fire and gas system?

2 Answers   Andhra Petrochemicals Limited,

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what is the difference between hub and switch?

6 Answers  

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where cascade loop use ?

0 Answers   KNPC, KOC,

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I am new in work for 1 of our project we have some instrument in BOM including Pressure, Temp. and so on, I also noticed some objects like pressure switch process HOOK UP; which I don't know what does "HOOK UP" mean here.

3 Answers  

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WHEN BOTH WIRES OF THERMOCOUPLE R SHORTED WHAT IS THE OUTPUT THE TEMP ARE 0,30,250,320

13 Answers  

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why orfice is not used for main steam flow calculation

0 Answers   OEG,

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