BS EN 60970:2007
Current
The latest, up-to-date edition.
Insulating liquids. Methods for counting and sizing particles
Hardcopy , PDF
English
06-30-2008
INTRODUCTION
1 Scope
2 Normative references
3 General caution, health, safety and environmental
protection
4 Significance
5 Comparison and limitation of the methods
6 Types and identification of particles
7 Sampling
7.1 General remarks
7.2 Sampling vessels
7.3 Cleaning of sampling bottles
7.4 General directions for sampling
7.5 Sampling procedure
7.6 Labelling of samples
7.6.1 Samples from tanks
7.6.2 Samples from electrical equipment
8 Preparation of the samples for analysis
9 Method A - Automatic particle size analyzer
9.1 Summary of method
9.2 Apparatus and auxiliary materials
9.3 Calibration procedures
9.4 Preparation of the apparatus for counting
9.5 Preparation of sample before counting
9.6 Preparation of sample for counting
9.7 Counting procedures
9.8 Report
9.9 Precision
9.10 Repeatability
9.11 Reproducibility
10 Method B - Optical microscopy
10.1 Principle
10.2 Procedure by transmitted light
10.3 Procedure by incident light
Annex A (informative) Use of syringes as sampling vessels
Annex B (informative) Calibration of the automatic particle
counters
Annex ZA (normative) Normative references to international
publications with their corresponding
European publications
Bibliography
Defines the sampling procedures and methods for the determination of particle concentration and size distribution.
Committee |
GEL/10
|
DevelopmentNote |
Supersedes 05/30138884 DC. (11/2007)
|
DocumentType |
Standard
|
Pages |
22
|
PublisherName |
British Standards Institution
|
Status |
Current
|
Supersedes |
This standard describes the sampling procedures and methods for the determination of particle concentration and size distribution.
Three methods are specified. One uses an automatic particle size analyser, working on the light interruption principle. The other two use an optical microscope, in either the transmitted light or incident light mode, to count particles collected on the surface of a membrane filter. The optical microscope methods are described in ISO 4407.
All three methods are applicable to both used and unused insulating liquids.
Annex A contains an alternative sampling procedure using a syringe and Annex B reports a reference for the calibration of automatic particle counters.
NOTE 1 The methods are not intended to measure particulate matter in liquids containing sludge. While analysing solid content on oils containing sludge refers to method for sediment and sludge determination in IEC 60422, Annex C.
NOTE 2 The methods specified are only applicable to measurements related to a limited range of size and number.
Standards | Relationship |
EN 60970:2007/corrigendum:2008 | Identical |
I.S. EN 60970:2007/AC:2008 | Identical |
IEC 60970:2007 | Identical |
NF EN 60970 : 2007 | Identical |
ISO 5884:1987 | Aerospace Fluid systems and components Methods for system sampling and measuring the solid particle contamination of hydraulic fluids |
EN 60422:2013 | Mineral insulating oils in electrical equipment - Supervision and maintenance guidance |
IEC 60422:2013 | Mineral insulating oils in electrical equipment - Supervision and maintenance guidance |
IEC 60475:2011 | Method of sampling insulating liquids |
EN 50353:2001 | Insulating oil - Determination of fibre contamination by the counting method using a microscope |
ISO 11171:2016 | Hydraulic fluid power Calibration of automatic particle counters for liquids |
ISO 4402:1991 | Hydraulic fluid power — Calibration of automatic-count instruments for particles suspended in liquids — Method using classified AC Fine Test Dust contaminant |
EN ISO 14402:1999 | Water quality - Determination of phenol index by flow analysis (FIA and CFA)(ISO 14402:1999) |
ISO 4407:2002 | Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using an optical microscope |
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