Greg McMillan Forum Moderator 39 Posts
Re: Can you suggest a mass-flow meter that could be used to control flow rate?25 April 2014 at 1:52pm
Unless there is some problem with materials of construction, my assessment is that a Coriolis meter would be the best choice. The Coriolis meter is the only true mass flow meter and has the greatest accuracy and rangeability of any flow measurement. I don't know of any viscosity limitations. The temperatures and pressures cited are within the specs of the meter. If the accumulation of solids is a concern in the U-tube or bend of the highest performance Coriolis meter designs, a straight tube Coriolis meter can be used but the accuracy and rangeability is less.
We are compounding plastics resins and incorporating EPDM rubber into a twin screw extruder via a single-screw extruder (essentially a gear pump). This process is strictly controlled by the drive motors and is a volumetric process. We have too much variability to produce consistent product. Is there a mass-flow meter that could be used to control flow rate of this material? Pressures are low, 300-800 psi and temperatures are below 200F.
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