What is shielding effect?

0 Answers   Process Control Technologies,

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What is the purpose of bypass valve across AS valve.

0 Answers   ADMA OPCO,

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can we replace a pressure transmitter of range 0 to 25 Kg/cm2 by a Pressure transmitter of range 0 to 10 Kg/cm2 ?.. Will it affect 4 to 20 mA output signal which we will feed to the PLC.

9 Answers   IOCL,

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What is Actuator?

3 Answers   Descon,

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hi this is noor in my work spot, i arranged THERMOCOUPLE in the place of RTD. (in FEED WATER tank). can i use T/C or not?

10 Answers  

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how to calculate MMWC values in to Tonns(MMWC values showing in DP transmitter and Tonns value showing in Totalizer). please tell me details?

2 Answers   Chemin C I, MSP,

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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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Hi, I'd like to know the purpose of MOS (maintenance override switch). At site, these switches are installed in a stanchion with the transmitter (connected to ESD). thank you.

3 Answers   Adani, Adani Wilmar,

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whats the working of principal thermocouple

6 Answers  

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What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

0 Answers   ADMA OPCO,

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As you are fresher in Instrumentation & control engineer.Then why should I select you?

1 Answers  

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Why grounding is necessary? Give example with diagram.

0 Answers   Bright Point, DS Group,

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