The oval gear flow meter is one of the longest established positive displacement (PD) flow metering technologies; its high accuracy & wide operating range makes oval gear meters a very popular choice for dependable flow measurement.
What are Oval gear Flow Meters & How do they work?
Oval gear meters are displacement-type volume meters that transport defined incremental volumes in individual measuring chambers. The measuring element consists of two high precision toothed oval gears, which are driven by the flow of the medium and mesh with each other. In this way, a defined volume is transported for each rotation of the pair of oval gears. The number of rotations is a measure of the amount of fluid that has passed through the meter. The rotations are detected by a sensor element.
They work by two oval gears meshing with each other but turning in different directions. This creates four different ‘measuring cavities’ in which volume is measured as liquid enters & leaves the chamber. The oval gear design & the tight tolerance of the meters manufacture provides a smooth & repeatable action.
Oval Gear flow meters can be used in both high & low flow applications ranging from several thousand litres, to just a few millilitres per minute. They are also suitable for use in applications in which the flow rate may vary. Unlike many other meter technologies, oval gear meters are virtually immune to change in liquid viscosity. With this in mind they can be used applications where flow, pressure, & temperature may vary throughout the process. In keeping with other PD meter technologies, oval gear flow meters are suitable for use with “clean” liquids only.
Positive displacement meter for volumetric ow rate or total ow measurement
Applicable for uids such as lubrication oils, mineral oils, hydraulic oils, fuels, liqui ed gases and others
No inlet or outlet section required
High-quality construction for long service life and high reliability