ISO 14085-2-2015 PDF

Full title and description

Aerospace series — Hydraulic filter elements — Test methods — Part 2: Conditioning. Specifies test procedures to thermally condition hydraulic filter elements used in aerospace hydraulic systems, including combined cold and hot soaks, temperature variation cycles and cold-start simulation, to provide reproducible thermal conditioning prior to performance tests.

Abstract

ISO 14085-2:2015 establishes a procedure to thermally condition hydraulic filter elements to represent aerospace hydraulic system stresses. It defines combined cold soaks, hot soaks and temperature-variation tests and a method to simulate cold starts. The part is intended to produce reproducible conditioning data to be used before performance tests described in other parts of ISO 14085; it is not intended to qualify a filter element under exact in-service conditions.

General information

• Status: Published.
• Publication date: March 2015 (Edition 1, 2015-03).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 (Hydraulic systems and components for aircraft and spacecraft).
• Edition / version: Edition 1 (2015).
• Number of pages: 13.

General information sourced from the ISO record for ISO 14085-2:2015.

Scope

Defines thermal conditioning test procedures for aerospace hydraulic filter elements to simulate typical thermal stresses encountered in aerospace hydraulic systems. The part prescribes combined cold/hot soaks, temperature variation cycles and cold-start simulation intended to be applied prior to performance testing; it does not provide qualification under actual service conditions (which require bespoke test protocols).

Key topics and requirements

• Thermal conditioning procedures to simulate aerospace hydraulic system stresses.
• Combined cold soaks, hot soaks and temperature-variation test sequence requirements.
• Cold-start simulation procedure for filter elements.
• Use of conditioning as a preparatory step before performance tests in other ISO 14085 parts.
• Emphasis on reproducibility of thermal conditioning rather than service-qualification under actual operating fluids or contamination conditions.

These requirements are described in the standard's test method definitions.

Typical use and users

Used by aerospace hydraulic filter manufacturers, independent test laboratories, OEM engineering and qualification teams, certification bodies and quality departments to condition filter elements before performance evaluation and comparative testing. The data produced supports evaluation and comparison of filter-element performance in aerospace applications.

Related standards

ISO 14085 is a multipart series; related parts include ISO 14085-1:2015 (Test sequence), ISO 14085-3:2015 (Filtration efficiency and retention capacity — note: a newer version of part 3 was published in 2024), and ISO 14085-5:2015 (Resistance to flow fatigue). These parts together define the broader test methods for hydraulic filter element evaluation.

Keywords

aerospace; hydraulic filter element; conditioning; thermal conditioning; cold soak; hot soak; temperature variation; cold start; test method; ISO 14085.

FAQ

Q: What is this standard?

A: ISO 14085-2:2015 is the part of the ISO 14085 series that specifies thermal conditioning test methods for hydraulic filter elements used in aerospace hydraulic systems.

Q: What does it cover?

A: It covers procedures for thermal conditioning including combined cold soaks, hot soaks, temperature variation cycles and cold-start simulation; its purpose is to provide reproducible conditioning before performance testing, not to replicate exact service conditions.

Q: Who typically uses it?

A: Aerospace component manufacturers, testing laboratories, OEM qualification and design engineers, certification bodies and quality/acceptance teams use this part to condition filter elements prior to performance or comparative tests.

Q: Is it current or superseded?

A: ISO's record shows ISO 14085-2:2015 as a published standard. The ISO entry notes review/confirmation activity (the document was reviewed and confirmed in ISO maintenance cycles); at the time of the ISO catalogue record the version is treated as current. Individual other parts in the series (for example part 3) have seen updates (part 3 has a newer 2024 edition). Users should check the official ISO catalogue for the very latest status before procurement or compliance activities.

Q: Is it part of a series?

A: Yes — ISO 14085 is a multipart series covering test methods for aerospace hydraulic filter elements (examples: ISO 14085-1, -2, -3, -5). The parts are intended to be used together for comprehensive evaluation.

Q: What are the key keywords?

A: Key keywords include: aerospace, hydraulic filter element, thermal conditioning, cold soak, hot soak, temperature variation, cold start, test method, ISO 14085.