Device for calibrating hydraulic flow measurement systems

摘要

The device has a container (10) and a calibration plunger (20), which adjusts the free volume of the container. The plunger is adjusted by an electrically controlled micrometer screw (30). The initial flow recorded by the meter is stored. The plunger is then adjusted to obtain a definite change in volume of the container and the new flow is measured and subtracted from the initial flow. The difference is compared to the flow generated by the calibration device, from which the accuracy of the flow measurement system is determined or the correction required An Independent claim is also included for a method for calibrating a hydraulic flow measurement system.