ISO 8917:1988

Light olefins for industrial use — Determination of water — Guidelines for use of in-line analysers

Publication date:   Dec 29, 1988

95.99   Withdrawal of Standard   May 27, 2002

General information

95.99   Withdrawal of Standard   May 27, 2002

ISO

ISO/TC 47 Chemistry

International Standard

71.080.10   Aliphatic hydrocarbons

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Scope

Gives methods for the determination of water using an analyzer with an in-line sensor in gaseous flows of the substance to be analyzed. Compiles the various principles of working of the most generally used commercial analyzer like electrolytic decomposition - light reflection on a cooled mirror (dew-point) - modification of vibration frequency of a quartz crystal covered with a hygroscopic layer - variation of the capacity of a capacitor formed by a hygroscopic dielectric polymer and two porous electrodes - infrared spectrometry - Micro-wave absorption measurement - variation of the capacity of a capacitor consisting of an aluminium oxide dielectric covered by an evaporated porous gold film.

Life cycle

NOW

WITHDRAWN
ISO 8917:1988
95.99 Withdrawal of Standard
May 27, 2002