• The device is easy to operate independent of the atmospheric pressure and location. The measuring principle is based on the evaluation of velocity of sound. A microprocessor converts the measured values automatically into SF6-volume percentages; these values are shown on a digital read-out.

• This device is designed for determining the SF6 volume percentage. The response time is about 1 min. A built-in purge valve allows the user to vent mixtures within the connecting hoses.