Mirrant OvalFlow 2600,Oval gear meters are displacement-type volume meters that transport defined incrementalvolumes in individual measuring chambers. The measuring element consists of two high precisiontoothed oval gears, which are driven by the flow of the medium and mesh with eachother. 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.A very precisely adjusted gear pair within the casing forms the measuring element. The inflowing medium causes the gear pair to rotate. The rotary motion is scanned by contactlesssensors. Since each individual tooth generates a pulse, this results in a very high resolution.Consequently, even the smallest volumes can be measured or dosed precisely.The measurement unit contains two pick-offs that are circumferentially offset by of a toothpitch to generate a 2 channel flow-proportional frequency signal.Suitable processing of the signal provides an greater resolution and the option to identify theflow direction. Basically, the measurement accuracy increases with increase in viscosity ofthe media.
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