Turbine Meter without Flow Straightener
Turbine Meter without Flow Straightener
(OP)
In AFC drawings we spotted a turbine flow meter without flow straightener upstream. Straight piping run upstream of the meter is 10D, downstream of the meter is 5D.
The fluid measured is wet Natural gas, almost pure Methane, water-saturated, at 15 barg and 50 degC.
I'm afraid it is too late for any design changes and installation of a straightening vanes, so my question is how bad the measurement accuracy will be affected in absence of the vanes? Measurement is quite important and it will serve as one of the key parameters for acceptance of the compressor (discharge flow). Contractual tolerance is +/- 5% on flow.
The fluid measured is wet Natural gas, almost pure Methane, water-saturated, at 15 barg and 50 degC.
I'm afraid it is too late for any design changes and installation of a straightening vanes, so my question is how bad the measurement accuracy will be affected in absence of the vanes? Measurement is quite important and it will serve as one of the key parameters for acceptance of the compressor (discharge flow). Contractual tolerance is +/- 5% on flow.





RE: Turbine Meter without Flow Straightener
RE: Turbine Meter without Flow Straightener
If was my money I’d go for a Zanker plate or a proprietary design that completely breakup the existing flow field and allow it to reform. Traditional tube bundles have been found not to do a good job with swirl.
RE: Turbine Meter without Flow Straightener