Answer / jeyaram

when we are using Differential Pressure.(diff. betw upstream
pr.& downstream pr.) for flow calculation , we have to apply
the formula ie..Flow is directly proportional to the square
root of Diff.Pr.

Answer / kishor deshmukh

actually the formula to calculate is expressed in terms of
the square root of change in the diffrencial pressure of the
flow at the upstream and downstream side of the dp cell so
we need to use the square root extractor.

Answer / bala murali

By using DP txr for Calculation of Flow we are enable squre
root in Txr.
This is bcoz the flow is directly proportional to square
root of Diff. pressure b/w HP and LP.

Answer / waqas abbasi ( ffbl )

Flow various directly as square root of different pressure
F=K square root of AP. since the flow various as the square
root of differential pressure the pin does not directly
indicate flow.flow can be determined by talking the square
root of the pin.so the pin read of the 50% chart.

I am an intru engg frm pune n completing mba marketing in may 2010, what kind of profile would best suit my educational qualifications??? Also, i will move to US in jan 2011, so this job experience should count Over there too 'coz i want to continue workin even there....

1 Answers  

---

What is the difference between radar and ultrasonic level transmitter? Which method is best and more accurate?

8 Answers  

---

what is the reset offset and control system in instrumentation

0 Answers   ABB,

---

what is sliding spool valves?

0 Answers  

---

why we use double acting valve and where?

1 Answers   Aker Solutions,

---

the output of the common trasmitter protocol in qatar gas are the following

0 Answers  

---

dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.

0 Answers   CPL,

---

What is the use of valve positioner?

1 Answers   CCIE,

---

what is difference between profibus and field bus?

1 Answers  

---

Reasons for using current as signal

1 Answers  

---

what is cascade loop and how it work and why it used instead of PID single loop? In cascade, Which loop is faster and slower? Please explain with loop drawing and example...

2 Answers   Honeywell,

---

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

0 Answers  

---