Radiant energy – Ionic separation or analysis – Methods
Patent
1985-04-23
1986-12-30
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
Methods
250288, 250423P, B01D 5944
Patent
active
046330828
ABSTRACT:
This invention is a method of detecting the presence of toxic and corrosive by-products in high voltage systems produced by electrically induced degradation of SF.sub.6 insulating gas in the presence of certain impurities. It is an improvement over previous methods because it is extremely sensitive, detecting by-products present in parts per billion concentrations, and because the device employed is of a simple design and takes advantage of the by-products natural affinity for fluoride ions. The method employs an ion-molecule reaction cell in which negative ions of the by-products are produced by fluorine attachment. These ions are admitted to a negative ion mass spectrometer and identified by their spectra. This spectrometry technique is an improvement over conventional techniques because the negative ion peaks are strong and not obscured by a major ion spectra of the SF.sub.6 component as is the case in positive ion mass spectrometry.
REFERENCES:
patent: 3626181 (1971-12-01), Wermland
patent: 3742213 (1973-06-01), Cohen et al.
patent: 3920987 (1975-11-01), Anbar et al.
patent: 4158775 (1979-06-01), Chutjion et al.
patent: 4401920 (1983-08-01), Taylor
Anderson Bruce C.
Hamel Stephen D.
Hightower Judson R.
Lovingood Katherine P.
The United States of America as represented by the United States
LandOfFree
Process for measuring degradation of sulfur hexafluoride in high does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for measuring degradation of sulfur hexafluoride in high, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for measuring degradation of sulfur hexafluoride in high will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1548708