Differential Flow Meters Calculation in Squre Root

Dear

If you mean flow rate calculation:

liquid flow is Qe =(Q).(Gl).sq of 1/Gf

Qe(flow rate).Q(upper range value).Gl(sg liquid at 15 ^oC).sq(square).Gf(sg liquid at process). . (time or x)

Gas flow is Qe = (0.593).(Q).sq of T.G/P

0.593(constanta).T(temp abs gas in ^oK).G(sg process gas).P(Pressure abs gas in kPa).

No Dear

i want calibrate a differential flow transmitter,its range is 0 to 500 mbar

at the time of calibration in 0 the output should be 4 mA & at 500 mabr the output should be 20 mA,in liniarly i get 125 mbar -8 mA,250 -12 mA,375 mbar-16 mA

BUT the transmitter flow range is in squre root , at the time of calibration in

0 mbar - i got 4 mA and 500 mbar-20 mA,but other outputs are different, CAN any one solve my problems

at 25% of 500mbar ie 125mbar you will get 12mamp.at 50% ie 250mbar you will get 15.31 mamp.at 75%ie 375mbar yuo will get 17.856mamp 500mbar 20mamp

can you try squaring the signal with a multiplier ic and using the output

Guest,

This is the second time you've inquired on this forum about the same issue.

Please explain what you are attempting to accomplish by answering each of the questions below.

What do you mean by 'calibrate'?

Is the transmitter functioning as it should in the process and you are just checking its output against a pressure source?

It is apparent that the transmitter is set up for square root output. Is it supposed to be a square root output?

What is it that you expect to be able to do with the equipment at hand?

Since you can read the current output at various pressure levels, what roadblock are you encountering?

What brand and model pressure transmitter are you working with?

What brand and model calibrator?