ISO 14085-2:2015 PDF

Scope: This part of ISO 14085 specifies — a procedure to thermally condition a hydraulic filter element to presumed aerospace hydraulic system stresses, — a test procedure to complete cold soaks, hot soaks, and temperature variation in a combined manner, and — a test procedure to simulate cold starts. This part of ISO 14085 is not intended to qualify a filter element under replicate conditions of service; this can only be done by a specific test protocol developed for the purpose, including actual conditions of use, for example the operating fluid or contamination. This part of ISO 14085 is intended to provide a test procedure that yields reproducible thermal test conditioning of a hydraulic filter element, for simulation of the thermal stresses typically encountered in an aerospace hydraulic system. The conditioning test procedures defined in this part of ISO 14085 are intended to be used prior to performance tests as specified in other parts of this International Standard. The tests data resulting from application of this part of ISO 14085 can be used to compare the performance of aerospace hydraulic filter elements.

ISO 14085-2:2015 Referenced Document

ISO 11218:1993 Aerospace; cleanliness classification for hydraulic fluids
ISO 1219-1:2012 Fluid power systems and components - Graphical symbols and circuit diagrams - Part 1: Graphical symbols for conventional use and data-processing applications
ISO 2943:1998 Hydraulic fluid power - Filter elements - Verification of material compatibility with fluids
ISO 3968:2001 Hydraulic fluid power - Filters - Evaluation of differential pressure versus flow characteristics
ISO 4021:1992 Hydraulic fluid power; particulate contamination analysis; extraction of fluid samples from lines of an operating system
ISO 5598:2008 Fluid power systems and components - Vocabulary

2015 ISO 14085-2:2015 Aerospace series - Hydraulic filter elements - Test methods - Part 2: Conditioning