HYDRAULIC PRESSURE CALIBRATOR AND CALIBRATION METHOD

摘要

The invention relates to a hydraulic pressure calibrator. The hydraulic pressure calibrator is a device for manipulating pressure of a hydraulic fluid in a controlled manner and can be used for calibration of pressure devices, such as hydraulic calibration and/or test applications. The calibrator comprises piping for accommodating a compressible hydraulic fluid to be pressurised. The piping has a connector for enabling a fluid connection to a device to be calibrated, such as a pressure standard. The calibrator further comprises a pressure transducer for sensing the pressure of hydraulic fluid inside the piping and a fluid pump for increasing pressure of hydraulic fluid inside the piping. Furthermore, the calibrator comprises an intensifier for intensifying fluid pressure provided by the pressure pump. In embodiments, the intensifier can have a piston assembly and the calibrator may further comprise a displacement transducer for sensing a change in position of said piston assembly.

主权项

1. A hydraulic pressure calibrator, comprising piping for accommodating a compressible hydraulic fluid to be pressurised, said piping having a connector for enabling a fluid connection to a device to be calibrated, the calibrator further comprising a pressure transducer for sensing the pressure of hydraulic fluid inside the piping, and a fluid pump for increasing pressure of hydraulic fluid inside the piping, wherein the calibrator further comprises an intensifier for intensifying fluid pressure provided by the pressure pump.