ISO 4392-1:1989

Hydraulic fluid power — Determination of characteristics of motors — Part 1: At constant low speed and at constant pressure

This part describes a method of determining the characteristics of motors, of either fixed or variable displacement types. The accuracy of measurements is divided into 3 classes, A, B, and C which are explained in annex A. Figure 1 shows a typical test circuit for bidirectional motor. The informative annex B contains the bibliography. This second edition cancels and replaces the first edition (1988).