Process for automatic titration
AssigneeRadiometer A/S
InventorSoren-Christian Krogh
Life of this patent
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Abstract
A process for automatic titration wherein the dosage of titrant is controlled by a digital computer, the titration being started with at least one dosage of a preselected size, each dosage of titrant thereafter and throughout the total course of the titration being precalculated and controlled on the basis of transducer signal change per added titrant volume unit at the preceding dosages in such a way that the titrant dosages are relatively smallest around the equivalence point.
Claims12
A process for controllably obtaining titration in a chemical system by automatic control of successively provided titrant dosages to said chemical system after provision of at least one initial preselected size of titrant dosage, said process comprising the steps of
- successively sensing a total of said titrant provided as a result of each of said successively provided dosages up to the time of the most recent provided dosage and successively providing a titrant dosage signal change .DELTA.V to a process controller each time in response to the most recent provided dosage at said time,
- successively detecting a change in chemical condition of said chemical system in response to each of said provided dosages and providing a transducer signal change .DELTA.S to said process controller in response to each said detected change in condition, and
- successively controllably varying the size of each of said successively provided dosages by said process controller each time in response to at least the most recent of said provided transducer signal changes .DELTA.S and said provided titrant dosage signal change .DELTA.V which corresponds to said provided transducer signal change .DELTA.S at said time for successively reducing each of said titrant dosage sizes as the relationship .DELTA.S/.DELTA.V increases and for increasing each of said titrant dosage sizes as said relationship .DELTA.S/.DELTA.V decreases, whereby the titrant dosage size each time is a function of at least the most recent relationship .DELTA.S/.DELTA.V at said time.
Dependencies are inferred from the claim text.