Piston flow meters are ideal for low-viscosity fluids due to the tight tolerances & fits they use.
However, due to these tight fits, clean fluid must be used (or filters put in place) as a particle getting trapped can actually block flow. They operate by a piston moving within a chamber of known volume.
Piston Flow Meters
When fluid passes into this chamber, the piston displaces an exact volume of liquid. Piston meters are great for low-volume flow measurements.
Credits: hytekflowmeters.com
Piston Flow Meters offer the highest accuracy and measure the lowest flow rates of any meter. These precision meters are suitable for all low-viscosity liquids.
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