SIKA

Positive Displacement Flow Sensors (VZ Series)

Sika's positive displacement flow sensors (VZ series) are highly accurate transmitters that measure volume flows. They work on the positive displacement principle.The flowing medium causes a pair of gear wheels to rotate. The sensor is manufactured to the highest accuracy and is then precisely assembled. The rotation is scanned by two non-contact pick-offs. As each tooth…

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Sika’s positive displacement flow sensors (VZ series) are highly accurate transmitters that measure volume flows. They work on the positive displacement principle.

The flowing medium causes a pair of gear wheels to rotate. The sensor is manufactured to the highest accuracy and is then precisely assembled. The rotation is scanned by two non-contact pick-offs. As each tooth generates a pulse, the resolution is very high. Very low flow rates can be accurately measured and small volumes can be dosed. The measurement unit contains two pick-offs that are circumferentially offset by ¼ of a tooth pitch to generate a 2 channel flow-proportional frequency signal.

Suitable processing of the signal provides a greater resolution and the option to identify the flow direction. It is possible to measure not only high viscosity media but also media whose viscosity varies e.g. because of changes in temperature. Vice versa, measurement accuracy decreases with viscosities below 10 mm/s² and especially in the lower flow rate range.By their very nature gear, type flow sensors require the measured medium to be slightly lubricating.Use with non-lubricating media, e.g. water, is impossible.Convincing advantages

Datasheet SIKA Postive Displacement Flow Sensors (VZ series) Datasheet_SIKA_Postive_displacement_flow_sensors (VZ series).pdf

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