Answer / imran mansuri

For gas and vapor flows, it is important that
no stray liquid droplets collect in the impulse lines
leading to the transmitter, incase vertical liquid
column begin to collect in those lines and generate an
error-producing pressure For liquid flows, it is
important that no gas bubbles collect in the impulse lines,
or else those bubbles may displace liquid
from the lines and thereby cause unequal vertical liquid
columns, which would (again) generate an
error-producing differential pressure.
In order to let gravity do the work of preventing these
problems, we must locate the transmitter
above the pipe for gas flow applications and below the pipe
for liquid flow applications

Answer / msn raju

Because gas want to went to atmosphere upside always and liquid always downside

Answer / r.govindasamy

gas will not condensate so txr connected above fluid
line.Butsteam line steam will be condnsate.so txr connected
below fluid line.

Answer / trideep

According to the charcter of gas in fluid mechanisam theary, it has no size and wont accumulate at the desired place/ tank if you say.. In case of liquid vice versa....

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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How to work DCS? how to get the signal from Field Instruemtns to PIB to Console?

2 Answers   Alstom, Invensys,

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Please can anybody tell me the step by step procedure for calibrating the Pr,Lvl,Fl,Temp transmitter on process?

1 Answers  

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If a warning lamp will operate with the ground circuit is bypassed with a jumper wire to ground, what should you check?

0 Answers  

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1. For Steam drum level signal, why do we compensate with drum pressure signal? 2.For main steam Flow signal is comensated with main steam temperature signal and main steam pressure signal why?

0 Answers  

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what is interlock ckt? why it is necessary in industrial machines ?

2 Answers   IOCL,

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what is the use of shield cable?

2 Answers  

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How would you choose differential range?

0 Answers  

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What is wet leg condition and why is it used?

0 Answers  

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Controller not working in auto mode?...what are the problem can occur...Pls explain

1 Answers   Aramco,

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Describe all types and levels (4-20mA, 0-10V, mV, pulse, etc.)of analog and digital I/O used in process control application.

2 Answers   Jindal,

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admittance level sensor meaning?

2 Answers   CGL,

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