Answer / simi susan john

Double acting position er send and exhaust the air at one side of the actuator to position the valve.
Single acting positioner send and exhaust the air at both the sides.

how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.

0 Answers  

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Sitrans LR460 Radar level transmitter getting level out or disturbed level during moisture present in the material ie coal in the pccb bunker in CHP.Any suggestions for this problem...????

1 Answers   ABG Shipyard,

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how manys ways dp transmitter can be calibrated having range of -150 to 400mmwc,what side pressure u will apply?

3 Answers  

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what do u mean by 2/3 soleniod valves?

8 Answers   Nile Sugar,

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p=hdg,please explain these parameters?

7 Answers  

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can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.

0 Answers   Honeywell,

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Can a Differential Pressure Transmitter be used as a normal pressure transmitter??

3 Answers  

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What is ultrasonic flowmeter?

0 Answers  

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Name and describe at least 4 status indicators, typically found on a PLC

2 Answers  

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what are the standards used for earthing instruments in the field?

1 Answers  

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how to convert MA in to measuring values..and how mwasuring values into MA ?..plz ansr.i have intervw

0 Answers  

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In 2 wire transmitter 1 wire is used for power and other is used for signal( 4-20)ma In 4 wire transmitter 2 wires are used for power and 2 wires are used for signal (4-20)ma . but my question is "what is the criteria or parameters we have to consider while selecting these transmitters for eg( distance, safety zones etc.

1 Answers  

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