Safe fluid detection in AC powered devices

Details Safe fluid detection in AC powered devices Safe fluid detection in AC powered devices

2005-03-01

2005-03-01

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

C324S444000, C324S446000, C324S691000

Reexamination Certificate

active

06861843

ABSTRACT:
An AC powered device detecting the presence of a conducting fluid using a source of detecting current through the fluid other than a grounded supply. All paths between the source of current and the fluid include large impedances, termed protecting impendances. The protecting impedances are sufficient to prevent the fluid from posing a shock hazard should the source have or develop a connection to AC. Protection does not rely on the isolation of the source from AC. The source may be either AC or an ungrounded supply generated by the device. Using AC as the source of detecting current eliminates the need to generate an ac signal to limit plating. The sensing circuit may remain isolated by using AC leakage current to drive the sensing means. Fluid detection is possible in devices in which the fluid is in contact with a probe, typically the chassis, whether the probe is grounded as intended or is floating.

REFERENCES:
patent: 4808931 (1989-02-01), Ling
patent: 5543717 (1996-08-01), Kordas
patent: 5854557 (1998-12-01), Tiefnig

Affiliated with

Also associated with

Rating

Safe fluid detection in AC powered devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Safe fluid detection in AC powered devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safe fluid detection in AC powered devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3437103