Apparatus to regulate the pH value or other similar values of a

Details Apparatus to regulate the pH value or other similar values of a Apparatus to regulate the pH value or other similar values of a

1976-12-27

1978-01-03

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Mixture condition maintaining or sensing

G05D 1108

Patent

active

040660923

ABSTRACT:
The invention relates to apparatus for regulating the pH value, or other similar values, of a solution. The apparatus includes an actual value transmitter, a desired value transmitter, a regulator controlled by the two transmitters, and a servo unit controlled by the regulator for adding a measured amount of additive to the solution. The servo unit includes a pulse driven metering pump to provide the supply of additive. The applied pulse frequency has a logarithmic relationship to the control signal derived from an error signal which makes possible exact regulation corresponding to the logarithmetic relationship between the pH value and the concentration of additive introduced into the solution.

REFERENCES:
patent: 3605775 (1971-09-01), Zaander et al.
patent: 3729013 (1973-04-01), Anderson

Affiliated with

Also associated with

Rating

Apparatus to regulate the pH value or other similar values of a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus to regulate the pH value or other similar values of a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus to regulate the pH value or other similar values of a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-276236