Hi,
We are operating a 3051SFC (MVT) Compact Conditioning Orifice Flow meter on a gas line.
Recently we dropped some pressure in the line and the baseline DP to negative.
At the time there was no other scheduled or work undertaken on this pipe. It is not connected to any other process. The manifold has been checked twice. Back pressure is held via a Fisher EZR.
This creates a potential conflict over reliability of the readings as we used a DP cutoff of 0.025 previously and so we are not recording similar flow periods.
Process Conditions: Upstream: 500-1000kPa / Downstream: Atmospheric / Fluid Type: Natural Gas
Any thoughts on this is greatly appreciated.
Cheers
Kitndavj