EN 60970:2007/corrigendum:2008
Current
The latest, up-to-date edition.
INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES
31-01-2008
FOREWORD
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
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