ISO 11171:2020

Hydraulic fluid power — Calibration of automatic particle counters for liquids

Publication date:   Nov 19, 2020

95.99 Withdrawal of Standard   Mar 18, 2022

General information

95.99 Withdrawal of Standard   Mar 18, 2022

ISO

ISO/TC 131/SC 6 Contamination control

International Standard

23.100.60   Filters, seals and contamination of fluids

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Scope

This document specifies procedures for the following:
a) primary particle-sizing calibration for particle sizes 1 µm(c) and larger, sensor resolution and counting performance of liquid automatic particle counters that are capable of analysing bottle samples;
b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC;
c) establishing acceptable operation and performance limits;
d) verifying particle sensor performance using a test dust;
e) determining coincidence and flow rate limits.
This document is applicable for use with hydraulic fluids, aviation and diesel fuels, engine oil and other petroleum-based fluids. This document is not applicable to particle-sizing calibration using NIST SRM 2806b primary calibration suspensions.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11171:2016

NOW

WITHDRAWN
ISO 11171:2020
95.99 Withdrawal of Standard
Mar 18, 2022

REVISED BY

PUBLISHED
ISO 11171:2022