Answer / sarvar

Yes there are many, Once I had seen is from STAHL Germeny.

Answer / pradeep

Yes. You will have to mention the type of Zone, where you
are going to use it. Lot of manufacturers are there.But,
normally the HMIs will be kept in a safe area.

Answer / bm

I have not come acros flame proof HMI's but I believe that
the flameproof condition can be achieved if we install the
normal HMI indside a flame proof enclosure/box which(i.e
the enclosure/box) will satisfy the Eexd certification.

what is the difference b/w wet leg & dry leg level method

2 Answers  

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while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?

0 Answers   Gasco,

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why two probes are used in turbine flowmeters?

2 Answers  

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how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?

0 Answers  

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During valve sizing from all calculation you got flow coefficient CV 12,than what it means? like for selecting pressure transmitter if your MAWP is 12 bar than you select a capsule of max. 20 bar which cover your mawp 12 in same way for selecting control valve If CV is 12 than how we use it in selecting valve??????

1 Answers  

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My friend has faced this question! I don't know clearly. So please anyone give me the correct and short answer to this question? What is variable frequency drive? Types, what is star to delta? Why this arrangement necessary?

5 Answers   Asian Paints, TCS,

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What is difference between profibus and modbus communication

2 Answers   GMR,

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in split range control valve,two valve should be in two different line and that should have some distance,and we have only one positioner feed back link.so how we connect one feed back in two control valves?if you have picture please forward me.my email id kb.syamkumar@gmail.com

2 Answers  

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What is the maximum distance limit of 4-20mA and 0-10V DC standard signal transmission ?

3 Answers   BARC, ME,

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What is the meaning of slope in PH transmeter?

1 Answers   Uttam Sugar,

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What is an SCR?

4 Answers   GAIL,

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what is meant by calibration

20 Answers   Exxon Mobil,

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