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ISO 21018-4:2016

Hydraulic fluid power -- Monitoring the level of particulate contamination in the fluid -- Part 4: Use of the light extinction technique

General information

Withdrawn from 16.08.2019
ICS Groups
23.100.60 Filters, seals and contamination of fluids
Directives or regulations
None

Standard history

Status
Date
Type
Name
16.08.2019
Main
ISO 21018-4:2019
24.10.2016
Main
ISO 21018-4:2016
ISO 21018-4:2016 specifies a method for the determination of the particulate contamination level using the light extinction technique (also known as light blockage or light obscuration) either online or off-line in containers. It also defines procedures for calibrating the instruments and verifying their correct operation both in the laboratory and in service.
In general, the techniques described in ISO 21018-4:2016 are suitable for monitoring
-      the general cleanliness level in hydraulic systems,
-      the progress in flushing operations, and
-      support equipment and test rigs.
The use of this method is applicable to single-phase liquid systems only.

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English (PDF 285 KB)

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English