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 I need valve guard and whats different between guard and positioner ??

0 Answers  

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-200mmwc to 500mmwc range transmitter have there 4mA is -200 and 20mA is 500.what is the range in 12mA?

5 Answers   NCC,

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How to Calibrate Radar Level Transmitter in Field

0 Answers  

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What is hp & mp seperator .& what is its working principle ?

0 Answers  

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Galvanizing.

0 Answers   CCIE,

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What does threshold mean? what does tolerance mean?

1 Answers   DEWA,

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what is isolation Transformer???...

3 Answers   Emerson,

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Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 Answers   IOCL,

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In turbine what does term CDP, NI, NH, HSSOC means.

0 Answers   ADMA OPCO,

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Any body have know try work calculation ???

0 Answers  

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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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