Answer / amit srivastava

According to flapper nozzle system, the flapper nozzle gap
and output of back pressure is nonlinear.But if we observe
the nozzle back pressure and flapper nozzle gap curve, at
3-15 psig output the curve is linear.

Answer / nirmalyabasu

this signal is globaly accepted as a transmitable pneumatic
signal so for every pneumatic works this signal is accepted
or used.

Answer / poorni

we cant find the error wnen it is in null conditions.so the
pressue range starts from 3 psi and most of the instruments
does not exist more than 15 psi.

Answer / ch amir islam

Normally we use the CVs that have thier bench set more than
3 to 15 PSI but some time at low pressure line we use CVs
that have bench set of 3 to 15 PSI so we use the i/p of a
possitioner as o/p for traveling of CV but in normal cases
we dnt have i/p of possitioner below than 15 PSI.

Answer / ch amir islam

Normally we use the CVs that have thier bench set more than
3 to 15 PSI but some time at low pressure line we use CVs
that have bench set of 3 to 15 PSI so we use the i/p of a
possitioner as o/p for traveling of CV but in normal cases
we dnt have i/p of possitioner below than 15 PSI.

what is the difference betwwen the 2wire level transmitter and 4wire level transmitter??and their applications also??

2 Answers  

what is the function of boiler in plant?

2 Answers   Maden,

what is droop in governer ,type of droop ,how it work

0 Answers   TATA,

when the force applied on load cell the ohms will be varriying .and how its convert ohms to mv generate and have any formulae?

1 Answers   UETCL Uganda Electricity Transmission Company Limited,

how is a displacer type level transmitter calibrated.explain the method?

2 Answers   Emirates,

Can anyone help me with the Question bank(objective type) for complete Instrumentation engineering,either a soft copy or a Hard copy(Book),or the name of the author ,or publisher.

1 Answers   Reliance,

why we use condesiate parts before tranmitters?

3 Answers  

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.

1 Answers  

how to overhaul control valves.what are the proper procedures.

1 Answers   Jindal, QAFCO,

what is a device net.

1 Answers  

How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System

0 Answers  

what is difference b/w the solinoid volve and autodrain?

3 Answers