Compressed air flow measurement on Rosemount 8800D

Flow Q&A

We have a problem with compressed air flow measurement with the Rosemount 8800D vortex flow meter. Did we pick the wrong instrument for our application?

Expert’s answer: Compressed air flow measurement on Rosemount 8800D

Compressed air flow measurement on Rosemount 8800D can be tricky. And, I hate to say it, but maybe. A vortex flow meter needs a minimum velocity to measure accurately. So when the Reynolds number drops below 20,000 (15,000 for gas and steam), the K-factor becomes non-linear. This means that the vortex won’t measure from zero. Therefore, if you need a device for all your flow ranges, try a thermal or differential pressure device.

Rosemount 8800D vortex

Once you set your numbers, check the installation, because the vortex requires a minimum inlet and outlet run. Your accuracy could suffer from the wrong installation.

8800 Vortex installation effects

Want more information on compressed air flow measurement on Rosemount 8800D?

Take a look at these links for more help:

And click these links for vortex flow meters on the market:

Other resources that might interest you

Air flow meter for air handler filter?
I’m designing an air handler for filter testing. I need high accuracy flow measurement across the full 24″ x 24″ cross section. What do you suggest?

Online diagnostic of vortex flow meter?
Is there any way to check my vortex flow meter online?

Monitoring dusty gas in ducting pipe
We have a case for monitoring dusty gas flow in a ducting pipe with a diameter of 4 meters and gas temperature up to 600 degrees Celsius. What kind of product should we choose?

Rosemount 8712 and another flow sensor
Can I have a Rosemount 8712 installed with another brand sensor?

Related tags: 8800D Air flow meter Compressed air Emerson Process Emerson Process Management Reynolds number Vortex
Compressed air flow measurement on Rosemount 8800D
Seven Vortex Flowmeters you should know
#LinkedInsights: Maximum Uncertainty of Orifice Plate Flowmeters AGA-3
Watch Out, it's Oxygen! Precautions for Choosing Flowmeters for Oxygen Service
Water well level measurement with Proteus EcoMeter
See related devices