Method for measuring restrictors in the form of bores, nozzles or diaphragms

摘要

Fluid pressurized by a pump (12) is admitted to the restrictor (10) and at least two reference restrictors (18,19). In an evaluator (20) are stored the operating characteristics (26) of the reference restrictors. The operating characteristics of the restrictor are determined by measuring those of the pump motor (16). The size of the restrictor aperture can be determined by comparing the sets of characteristics in the evaluator. An Independent claim is included for a device for carrying out the method.