Water well monitoring system

Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C073S29000R

Reexamination Certificate

active

06928868

ABSTRACT:
An apparatus and method for monitoring a liquid level in a 4-20 mA closed loop system are provided. A process instrument and a measuring unit are powered for a predetermined time and power is provided by a battery.

REFERENCES:
patent: 3711689 (1973-01-01), Park
patent: 3909948 (1975-10-01), Markfelt
patent: 3975115 (1976-08-01), Fisher et al.
patent: 4142411 (1979-03-01), Deal
patent: 4252015 (1981-02-01), Harbon et al.
patent: 4720799 (1988-01-01), Woithe et al.
patent: 4986120 (1991-01-01), Yanagisawa et al.
patent: 5418466 (1995-05-01), Watson et al.
patent: 5455503 (1995-10-01), Kohler
patent: 5915476 (1999-06-01), Hubbell et al.
patent: 6274865 (2001-08-01), Schroer et al.
Franklin Electric, Submersible Product Overview, http://www.fele.com/Prod_tex/item8.htm.
Endress + Hauser Technical Information TI 083R/24/ae Process Display RIA 261 Apr., 2001.
Endress + Hauser Technical Information TI 060R/24/ae Process Display RIA 250 Apr., 1999.
Endress + Hauser Technical Information TI 251P/24/ae Submersible Level Transmitter Waterpilot FMX 167 Apr., 2001.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Water well monitoring system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Water well monitoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water well monitoring system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3514248

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.