Moisture Measurement in SF6

An Environmentally Safe On-line Solution From Kahn

Kahn Easidew Transmitter

Wethersfield, CT, USA — The U.S. Environmental Protection Agency (EPA) has designated SF6 as a greenhouse gas and has imposed regulations to limit the amount of SF6 that is released into the atmosphere. This presents a problem for power companies that vent SF6 during moisture measurement tests.

Most electric utilities and independent power producers use Sulfur Hexafluoride (SF6) as an arc quenching and insulating gas in high voltage circuit breakers and switchgear installed in their electrical transmission and distribution systems.

A forward-thinking US electric utility developed a method to measure the moisture content of SF6 circuit breakers without venting the gas to atmosphere.

This power company permanently installed Kahn Easidew 2-Wire Transmitters into single-phase and 3-phase SF6 circuit breakers to provide an on-line measurement of moisture content.

Read the story online at or download it from our archives by clicking here: MoistureMeasurementInSF6

Kahn Hygrometers

Kahn manufactures and distributes a full line of precision hygrometers using the most accepted, proven technologies. Kahn hygrometers measure moisture in a broad variety of gases from vacuum to 6000 PSIG. Featuring more than 10 models, the Kahn product line can measure dewpoints from -120 °C to +90 °C (-184 °F to 194 °F). More information can be found in our hygrometer product line brochure.

Please click on the following link:

Hygrometer Brochure

About The Kahn Companies

Founded by Irving I. Kahn in 1945, The Kahn Companies have remained a family-owned enterprise for two generations. After emigrating from Germany in 1938, Kahn saw an opportunity to put his mathematics and physics background to use. He developed an electronic speed-measuring device which later evolved into a complete product line of electronic, hydraulic and pneumatic test equipment for the aerospace industry. An entrepreneur keenly interested in emerging technologies, Kahn was actively involved in new product development until his retirement in 1980.

The Kahn Companies
885 Wells Road
Wethersfield, CT 06109 USA

Phone: (860) 529-8643
Fax: (860) 529-1895


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