ISO 16889:2022
Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance of a filter element
Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance of a filter element
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 43
- Дата публикации:
- 25 января 2022 г.
- Издание:
- ISO IS 16889 edition 3 version 1
- ICS:
- 23.100.60
This document describes the following: — a multi-pass filtration performance test with continuous contaminant injection for hydraulic fluid power filter elements; NOTE 1 For the background interlaboratory study used to verify the test methodology, see Annex D. — 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; NOTE 2 It is necessary to determine by validation the range of flow rates and the lower particle size limit that can be used in test facilities. — a test using ISO medium test dust (ISO MTD) contaminant and a test fluid in accordance with Annex A. This document 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 influence of electrostatic charge. This document 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.
Abstract
Overview
ISO 16889:2022 - "Hydraulic fluid power - Filters - Multi‑pass method for evaluating filtration performance of a filter element" - defines a standardized, steady‑state multi‑pass filtration performance test for hydraulic filters. The test uses continuous contaminant injection (ISO medium test dust, ISO MTD) and a prescribed test fluid (Annex A) to measure contaminant capacity, particulate removal and differential‑pressure characteristics. The method produces reproducible filtration performance data without influence from electrostatic charge and is intended to compare filter elements under controlled laboratory conditions.
Key topics and technical requirements
- Multi‑pass filtration test with continuous contaminant injection: particles are recirculated through the element while contaminant is added until a terminal differential pressure is reached.
- Measured outcomes: contaminant mass injected, retained capacity, particulate removal efficiency (upstream/downstream particle‑size distributions) and differential pressure versus time/flow.
- Test contaminant and fluid: ISO MTD (ISO 12103‑1) and a test fluid specified in Annex A.
- Applicability limits: intended for filter elements with an average filtration ratio ≥ 75 for particle sizes ≥ 25 µm(c) and a final reservoir gravimetric level
Технические детали
- Технический комитет
- ISO/TC 131/SC 6 - Contamination control
- SKU
- ISO 16889:2022
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