Multiparameter process solution analyzer-controller

Claim 2

The improvement of claim 1 wherein said electrode coupler is a pH measuring means.

Claim 3

In a system for the automatic continuous on-stream analysis of a liquid process solution protected by an intake filter, the improvement comprising an in-line filter having at least one inlet connection and at least one exhaust connection, electrometric liquid analysis means, pressurized liquid intake means connecting said filter to said liquid, liquid exhaust means connecting said filter to said analysis means, pressure sensitive transducer means located in said exhaust means sensing the liquid pressure within said exhaust means generating an error signal when the pressure of said liquid drops below a predetermined level, normally open controlled valve means connected between said filter and said intake means controlling liquid input, normally open controlled valve means connected between said filter and said analysis means controlling liquid exhaust, a source of pressurized fluid, means connecting said fluid to said filter to effect the flow of fluid through said filter in a reverse direction from said liquid flow direction expelling entrained filter cake therewith, normally closed fluid intake controlled valve means connected between said filter controlling the input of said fluid to said filter, normally closed fluid exhaust controlled valve means controlling the exhausting of said fluid and said filter cake, and programmed control means actuated by said error signal (a) closing said normally open valves, (b) opening said normally closed valves and (c) restoring said valves to their normal mode in a predetermined sequence.

Claim 4

The improvement of claim 4 wherein said analysis means is adapted to automatically and continuously analyze a plurality of parameters.

Claim 5

The improvement of claim 5 wherein said analysis means is adapted to analyze conductivity and oxidation reduction potential.

Claim 6

The improvement of claim 4 wherein said controlled valves are adapted to be electrically actuated and said programming means is adapted to switch a source of electricity actuating said valves in a predetermined sequence.

Claim 7

The improvement of claim 7 wherein said programming means is adapted to transmit command signals to said valves in a sequence comprising (1) closing said liquid controlling valves in said intake and said exhaust, (2) opening said fluid intake and said fluid and filter cake exhaust valves, (3) causing air to flow through said filter for a predetermined period of time, (4) closing said fluid intake and exhaust valves and (5) opening said liquid control valves.

Claim 8

The improvement of claim 8 wherein said fluid is gaseous.

Claim 9

The improvement of claim 8 wherein said fluid is a liquid.

Claim 10

The improvement of claim 4 wherein said fluid source comprises a combination of discrete liquid and gaseous sources, said controlled intake and exhaust valves are three-way valves, and said programmer is adapted to control said three-way valves to cause said liquid and said gas to separately flow through said filter in accordance with a predetermined sequence.

Claim 11

In an integrated multiparameter analyzer for the continuous real-time measurement, surveillance and correction of a process solution by the electrometric method, an automatic titrator comprising a meaNs for sampling said solution, a source of a liquid titrating reagent, a positive displacement metering pump connected to said sampling means to provide a continuous sample of said solution, a positive displacement metering pump connected to said reagent to provide a continuous flow of said reagent, a mixing chamber having a single small restricted homogenizing entrance orifice, conduit means connecting the output sides of said pumps to junction means connected with said orifice, a homogenizing impact area within said mixing chamber, an electrode chamber, conduit means connecting said mixing chamber with said electrode chamber through which said mixed fluid flows, electrometric electrodes located within said electrode chamber, exhaust means connected with said electrode chamber to permit the continuous flow through of the homogenized analytical fluid, a controller-analyzer connected to said electrodes to provide at least one error signal when analysis of said fluid indicates deviation of said process fluid from a preselected condition.

Claim 12

The improvement of claim 12 wherein said controller-analyzer is adapted to provide an error signal to a control amplifier which is adapted to discretely control the output of each of said pumps.

Claim 13

The improvement of claim 13 wherein said controller-analyzer is adapted to provide an error signal which is adapted to control the outputs of said sampling and reagent pumps and an additional error signal which is adapted to control the addition of matter to said process solution to effect its restoration to said preselected condition.

Claim 14

The improvement of claim 12 wherein said electrodes are adapted to measure pH.

Claim 15

The improvement of claim 12 wherein said electrodes are adapted to measure Redox potential.