Specifies methods for determining the performance and efficiency of equipment, and applies to components having continuously rotating shafts. Describes requirements for test installations, test procedures, and the presentation of test results. Annex A gives guidance as to the use of practical units, annex B contains information on errors and classes of measurement accuracy, and annex C provides a pretest checklist of those items on which agreement is recommended between the parties concerned.
ISO 4409:1986 history
2019ISO 4409:2019 Hydraulic fluid power — Positive-displacement pumps, motors and integral transmissions — Methods of testing and presenting basic steady state performance
2007ISO 4409:2007 Hydraulic fluid power - Positive-displacement pumps, motors and integral transmissions - Methods of testing and presenting basic steady state performance
1986ISO 4409:1986 Hydraulic fluid power; Positive displacement pumps, motors and integral transmissions; Determination of steady-state performance