WG B3.40 - SF6 Gas Measurement Guide

SF6 Gas Measurement Guide

There is an inconsistent approach to the units used and the methods of measuring the parameters of SF6 gas that are causing confusion within the industry.

Specifically this brochure will seek to promote the use of consistent units of measurement for SF6 content, humidity and decomposition products; to clarify the interpretation of dew point versus frost point; to clarify the fundamental relationship between humidity, temperature and pressure; to explain the adsorption/desorption phenomenon present in a sealed gas compartment and to examine the use of the historic frost point of -5°C as the limit value for SF6 humidity.