BS EN 60814:1998

1 General
    1.1 Scope
    1.2 Normative references
2 Direct titration for low viscosity liquids
    2.1 Field of application
    2.2 Chemistry
    2.3 Apparatus
    2.4 Reagents and auxiliary materials
    2.5 Preparation of the apparatus
    2.6 Sampling methods
    2.7 Procedure
    2.8 Calculation of the result
    2.9 Report
    2.10 Precision
3 Evaporative stripping method for high viscosity liquids
    3.1 Field of application
    3.2 Outline of the method
    3.3 Apparatus and reagents
    3.4 Procedure
    3.5 Calculation of water content
    3.6 Report
4 Determination of water in oil-impregnated paper and
    pressboard
    4.1 Field of application
    4.2 Determination of water after previous extraction
          with methanol
    4.3 Determination by direct titration
    4.4 Evaporative stripping method
Figures
1 Block diagram of automatic titrator
2 Suitable titration vessel assembly
3 Block diagram of automatic titrator and evaporation
    stripping unit
4 Evaporator glass vessel with heater
5 Methanol container and extraction tube
Annexes
A Method for sampling of oil-impregnated paper and
    pressboard
ZA (normative) Normative references to international
    publications with their corresponding European
    publications

Covers procedures for determining water content of insulating liquids and in oil-impregnated cellulosic insulation with coulometrically generated Karl Fischer reagent.

This International Standard describes methods for the determination of water in insulating liquids and in oil-impregnated cellulosic insulation with coulometrically generated Karl Fischer reagent.

The method in clause 2 is applicable to water concentrations above 2 mg/kg in liquids having viscosity of less than 100 mm²/s at 40 °C.

The test method in clause 3, where water is extracted by means of a nitrogen stream, is the preferred method for insulating liquids of viscosity higher than 100 mm²/s.

Clause 4 describes methods for the determination of water content in oil-impregnated paper and pressboard over the range 0,1 % to 20 % by mass.