This part of ISO 4392 specifies two test methods for determining the startability of rotary hydraulic motors. It describes two comparable methods of measurement, namely the constant torque method (see clause 6) and the constant pressure method (see clause 7). Since the results obtained by these two methods are equivalent no preference is given to either. The accuracy of measurement is divided into three classes A, B and C, which are explained in annex B.
DS/ISO 4392-2-1989由丹麦标准化协会 DK-DS 发布于 1989。
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