Water conductivity monitoring circuit for use with a steam...

Details Water conductivity monitoring circuit for use with a steam... Water conductivity monitoring circuit for use with a steam...

2006-03-01

2008-11-04

Griffin, Walter D. (Department: 1797)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

C210S749000, C210S748080, C210S746000

Reexamination Certificate

active

07445703

ABSTRACT:
A water conductivity monitoring circuit determines the status of an ion exchange filter in the water flow to a steam generator. A microprocessor sends a reference signal to a conductivity sensor circuit that converts it to an excite signal that is sent to a probe in the water flow. Any conductivity of the water alters the excite signal, and the modified signal is compared to the reference signal to establish a value indicative of the conductivity of the water. The microprocessor compares the value to at least two thresholds representative of the status of the filter.

REFERENCES:
patent: 3814901 (1974-06-01), Morhack
patent: 3919627 (1975-11-01), Allen
patent: 4496906 (1985-01-01), Clack
patent: 4806912 (1989-02-01), Clack
patent: 5178125 (1993-01-01), Kuen
patent: 6078178 (2000-06-01), Barnett
patent: 6217751 (2001-04-01), Peeters

Affiliated with

Also associated with

Rating

Water conductivity monitoring circuit for use with a steam... 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 conductivity monitoring circuit for use with a steam..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water conductivity monitoring circuit for use with a steam... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4049581