Mineral insulating oils. Determination of kinematic viscosity at very low temperatures

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-04-1999

Publisher

British Standards Institution

Introduction
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Apparatus
6 Calibration
7 Procedure
8 Expression of results
Figure 1 - Viscometer bath and accessories

Defines a procedure for the determination of the kinematic viscosity of mineral insulating oils, both transparent and opaque, at very low temperatures, after a cold soaking period of at least 20 h, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. Applicable at all temperatures to both non-Newtonian and Newtonian liquids having viscosities of up to 20 000 mm2 x s-1. Suitable for the measurement of the kinematic viscosity of liquids for use in cold climates, at very low temperatures (-40 or at temperatures between the cloud and pour-point temperatures (typically -20C) where some liquids may develop unexpectedly high viscosities under cold soak conditions.

Committee	GEL/10
DevelopmentNote	Supersedes 96/202845 DC. Also numbered as IEC 61868. (09/2005)
DocumentType	Standard
Pages	12
PublisherName	British Standards Institution
Status	Current
Supersedes	96/202845 DC : DRAFT MAR 1996

Standards	Relationship
NBN EN 61868 : 1999	Identical
I.S. EN 61868:1999	Identical
SN EN 61868 : 1999	Identical
DIN EN 61868 : 1999	Identical
UNE-EN 61868:1999	Identical
EN 61868:1999	Identical
NF EN 61868 : 1999	Identical

ISO 3105:1994

Glass capillary kinematic viscometers — Specifications and operating instructions

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BS EN 61868:1999

Mineral insulating oils. Determination of kinematic viscosity at very low temperatures

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Abstract

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International Equivalents

Standards Referencing This Book

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