ISO 11943:2021

Hydraulic fluid power — Online automatic particle-counting systems for liquids — Methods of calibration and validation

Publication date: May 10, 2021

General information

Current stage: 90.92 Effective date: Aug 18, 2021

Originator: ISO

Owner: ISO/TC 131/SC 6

Type: International Standard

ICS: 23.100.60

Languages: French English

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Status: Published

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Scope

This document establishes methods for:
—   validating equipment used to prepare secondary calibration suspensions for automatic particle counters;
—    performing online secondary calibration of automatic particle counters;
—    matching two or more online particle counters, i.e. to count the same number of particles at a given size by two APCs associated online;
—    validating online particle counting systems with and without online dilution as used, for example, to measure the filtration efficiency of a hydraulic filter as described in the multi-pass filter test in ISO 16889.

Life cycle

PREVIOUSLY

Revises
ISO 11943:2018

NOW

PUBLISHED
ISO 11943:2021
90.92 Standard to be revised
Aug 18, 2021

REVISED BY

IN_DEVELOPMENT
ISO/PWI 11943

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