What is ISO 16889 - Hydraulic fluid power about?
ISO 16889 discusses hydraulic fluid power. The main motive of a hydraulic fluid power filter is that it keeps the hydraulic fluid contaminant free. ISO 16889 describes the following:
- A multi-pass filtration performance test with continuous contaminant injection for hydraulic fluid power filter elements
- A procedure for determining the contaminant capacity, particulate removal and differential pressure characteristics
- A test currently applicable to hydraulic fluid power filter elements that exhibit an average filtration ratio greater than or equal to 75 for particle sizes ≤ 25 μm(c), and a final reservoir gravimetric level of less than 200 mg/L
- A test using ISO medium test dust contaminant and a test fluid in accordance with Annex A
ISO 16889 is intended to provide a test procedure that yields reproducible test data for appraising the filtration performance of a hydraulic fluid power filter element without the influence of electrostatic charge. ISO 16889 applies to three test conditions:
- Test condition 1, with a base upstream gravimetric level of 3 mg/L
- Test condition 2, with a base upstream gravimetric level of 10 mg/L
- Test condition 3, with a base upstream gravimetric level of 15 mg/L
Who is ISO 16889 - Hydraulic fluid power for?
ISO 16889 on hydraulic fluid power (filters) is useful for:
- Petrochemical industries
- Hydraulic filters manufacturers
- Design engineer
- Quality control personnel
- Research and development facilities
Why should you use ISO 16889 - Hydraulic fluid power?
In hydraulic fluid power systems, one of the functions of the hydraulic fluid is to separate and lubricate the moving parts of the components. The presence of solid particulate contamination produces wear, resulting in loss of efficiency, reduced component life and subsequent unreliability. A hydraulic filter as described in ISO 16889 is provided to control the number of particles circulating within the system to a level that is commensurate with the degree of sensitivity of the components to the contaminant and the level of reliability required by the users.
To enable the comparison of the relative performance of filters so that the most appropriate filter can be selected, it is necessary that test procedures be available. The performance characteristics of a filter are a function of the element (its medium and geometry) and the housing (its general configuration and seal design). In practice, a filter is subjected to a continuous flow of contaminant entrained in the hydraulic fluid until some specified terminal differential pressure (relief-valve cracking pressure or differential-pressure indicator setting) is reached.
This test as described in ISO 16889 is intended to differentiate filter elements according to their functional performance but is not intended to represent performance under actual field operating conditions. Test conditions are steady-state, and the dynamic characteristics of industrial hydraulic systems are not represented. Other test protocols exist or are in development to evaluate performance with the cyclic flow, high viscosity, flow fatigue, etc. Using ISO 16889 you can specify a multi-pass method for evaluating the filtration performance of a filter element.
What’s changed since the last update?
BS ISO 16889:2008+A1:2018 supersedes BS ISO 16889:2008. BS ISO 16889:2008+A1:2018 includes some technical revisions with respect to BS ISO 16889:2008. These include:
- 6.3
- Annex A
