Positive Displacement Meters are designed to measure the flow of a broad range of liquids, including viscous, corrosive, and abrasive substances. Positive Displacement Meters measure the flow by separating it into segments of known volume and then counting the segments. The rotor design allows small solid particles and sediment to pass through without causing damage or malfunction. Bridge seals prevent liquid from passing to the outlet port without being measured.
Our Positive Displacement Meters have identical parts, except for housing thread connections. Magnetic Coupling Assembly is used on the register side of the meter. A low pressure seal is used on the sampler side when a sampler is used. Positive Displacement Meters are made up of five basic components: body, bridge, rotor, side plates and register. The fluid passing through the meter is divided into segments by the blades of the rotor. Three segments pass through the meter each time the rotor completes a revolution. By counting rotor revolutions, a measure of the fluid is obtained