Answer / palaniappan balagurusamy

Flame scanners detect the UV or IR waves generated from the
hydrocarbon combustion. Visible type flame scanners are
also available.

Each type of hydrocarbon give out different frequencies of
UV / IR / visible spectrum.

Intensity component of the flame in a flame scanner is
detected to show the operator how intense the flame is.

The frequency of the flame is detected to discriminate
between different hydrocarbon flames. For example in an
boiler combustion flame scanner using oil and coal in
different elevtions, this facility will be useful. The
flame scanner in one elevation buring oil will not sense
the flame of the other elevation burning coal.

what is zenier barier and what means zone 1,zone 2,and zone 3

2 Answers   Bapco Bahrain Petroleum Company,

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what is the reason for flow fluctuations happen on differential flow transmitter during in service

2 Answers  

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why we use sensing type(NPN)on a vibration monitring system not a (PNP)sensing type

1 Answers  

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How can test or measure the probe and extension cable to identify if the problem at the probe or cable or at the driver it self? (pleast notify the measuring method)

0 Answers  

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1)What is the suitable MOC for flow meters working at temperature between 200 - 250 cen. 2)In which application the mass flow meters are not advisable 3)Is it advisable to use radiation type or radar type instrument for non contact application

1 Answers  

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Absolute pressure is 700psi,what will be the gauge pressure?

1 Answers   IFFCO,

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what is function of vibration, and how is it work, explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

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what is the output of conductivity sensor and PH sensor?

3 Answers  

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temptrure me ketne frequiency hote hai

0 Answers   ME,

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why we require Differential pressure?Why we use Orifice Plate?

3 Answers  

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the 3 most common transmitter protocol being in refinery or qatar gas and aramco.

0 Answers   Shell,

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I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

3 Answers   Qatar Petroleums, Samsung,

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