Turbine Meter Algorithm
Turbine Meter Algorithm
(OP)
I need to incorporate a Temperature & Pressure Correction factor into my program in order to correct Ethanol and Gasoline to 15C in a turbine meter. It seems that the meter output would be directly proportional to the fluid density with viscosity pretty much negligible in the 10-40C range. I would think this would be a readily available equation for these things but it is proving a difficult task.
Can anyone offer some insight?
Can anyone offer some insight?





RE: Turbine Meter Algorithm
Pressure compensation is via the liquid's bulk modulus property and temperature is via its thermal expansion coefficient, if its a liquid you're measuring. Gases can be compensated using an appropriate equation of state.
This explains some of the basics of measurement and gives you a few NIST links that should help you out.
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RE: Turbine Meter Algorithm
I think I found the correct formula for Density Correction with both temp and pressure. I just hope this is what API MPMS uses.
p1=[p0/1+B(t1-t0)]/[1-(P1-P0)/E]
p = density
P = pressure
B = beta = volume temperature coefficient
t = temperature
E = Bulk Modulus
For Gasoline B = 0.001 m3/m3*C and E = 1.30E09 Pa
For Ethanol B = 0.0011 and E = 1.06E09
RE: Turbine Meter Algorithm
JMW
www.ViscoAnalyser.com