We are currently executing one compressor module project. the suction line size is 30" due the straight length requirement we choose v cone meter for DP measurement where the straight length requirement is less.

- for compensation or mass flow measurement we have added a PT and TT

- The distance of TT from FE is 0.750 meter

- the distance of PT from FE is 7500 meters

- the reason for this the distance we have bend on 30" line followed by a in line strainer

Just want expert comments if there will significant error in the flow reading because of this distance.

I have one option is to use MVT and measure DP and P at the same location and ensure temperature after 7.5 meters.

Please advise
Ayyappan

 

You have left all of the significant details out of your description. I am afraid that your question can only be properly answered and the various risk factors assess only after careful engineering review (primary instrumentation, piping, and mechanical equipment). Such reviews in the course of a project can take several months given the response time of the various groups involved. Compressor systems cannot be taken lightly.

 

Why are you measuring the pressure so far away?

The pressure transmitter should be sharing a tap with the DP transmitter.