Answer / amit

two wire system means power supply of instrument and signal
output both communication coming through 2 wire only.

Answer / asim

By 2-wire it means the transmitter is powered form the
system to which it is connected... normally 24VDC and 4-
20mA signal is connected to the control system using only
one single pair of wires.

what is droop mode n frequency mode in wood ward governor?

1 Answers   TATA,

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How much voltage we are using at switches?

4 Answers   Edac,

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What is the start up procedure of desalter

0 Answers   Reliance,

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

1 Answers  

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1. what is 3 point calibration & 5 point calibration? 2. If we use hart communicator to set the LRV & URV of a smart transmitter, did we calibrate the transmitter? why? 3. Make a complet list if meterials needed to properly connect a pressure gauge to a steam pipe using 1/2 inch stainless steel tubing. The gauge connections is 1/2 inch NPT-M and the steam pipe tap has a 1/2 inch female coupling, compression fittings are use. 4. What are the tools in loop checking? 5. What would the ISA symbol of a square root extractor look like? 6. What would you do to completely prepare for the configuration? 7. What safety measures must you undertake when doing configuration? 8. what are the two most commonly use programming languages used when we configure a PLC? 9. What would you do if you accidentally skipped a step in the configuration procedure? 10. How would you know if the configuration were sucessful? 11. Name at least 3 selections available when we configure the burnout protection of a controller?

3 Answers   EI Electrotechnical Institute,

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how to make a calibration for differential pressure

2 Answers  

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Why humidity limit is 30 to 55 % for raw material storage?

1 Answers  

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If a differential pressure transmitter is calibrated for 0~2500 mmH2o and transmits a 4~20mA dc signal. The transmitter is placed across an orifice plate which is sized to create 2500 mmH2o differential at 5000m3/Hr a) what is the flow rate when the transmitter signal is 13.0mA DC? b) what is the signal output of the transmitter when flow rate is 2500 m3/Hr ?

5 Answers  

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how to change measuring units from mmwc to cubm/h in rosemount air flow transmitter with hart communicator fluke 744

0 Answers  

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Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?

3 Answers  

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why we use only 4-20 ma signal as AI and not 0-20 ma?

2 Answers   Honeywell, Oil and Gas Jobs,

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What different types of problems do occur while doing the loop checking? and please explain in detail or mail me at kadam.aniket143@gmail.com

1 Answers   Operational Energy Group, Process Control Technologies,

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