IEC 60970:1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods for counting and sizing particles in insulating liquids
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
31-12-2021
English - French
15-06-1989
Describes sampling procedures and methods for determining particle concentration and particle size distribution. Three methods are recommended, one using an automatic particle size analyzer and two based on the counting, with an optical microscope, of particles on the surface of a filtering membrane. All methods are applicable to both unused liquids and liquids in service.
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