APPARATUS FOR DETERMINING A MEASURED VALUE OF A MEASURAND IN PROCESS AUTOMATION TECHNOLOGY AND ITS METHOD OF USE

摘要

The disclosure includes an apparatus for determining a measured value in a liquid medium, comprising at least a light transmitter, at least one light receiver assigned to the transmitter, a measuring chamber that can be filled with the medium, wherein an optical path runs through the measuring chamber from the transmitter to the receiver. The apparatus includes a dosing apparatus for dosing at least one reagent and/or the medium, and for inserting the dosed reagent and/or the medium into the measuring chamber. The dosing apparatus is designed as a tube, and the tube includes at least a first control point, wherein the volume in the tube from a starting point to a first control point defines the amount of reagent or medium to be inserted into the measuring chamber. The disclosure further includes the use of the apparatus and a method for dosing the reagent.

主权项

1. An apparatus for determining a measured value of a measurand in a liquid medium by means of an optical sensor comprising:
at least one transmitter for transmitting transmitted light; at least one receiver associated with the transmitter for receiving received light; a measuring chamber, wherein an optical measuring path extends through the measuring chamber from the transmitter to the receiver; at least one dosing apparatus structured to generate a dosage of at least one reagent and/or the medium and for providing the dosage of the at least one reagent and/or the medium into the measuring chamber, wherein the dosing apparatus is a tube including a first control point, and wherein a volume of the tube from a starting point to the first control point defines the amount of a reagent or the medium to be provided into the measuring chamber; and a superordinate unit configured to generate an excitation signal to produce the transmitted light, wherein the transmitted light is converted into the received light by means of interaction along the measuring path in the measuring chamber with the at least one reagent and the medium, wherein the receiver generates a receiver signal upon receiving the received light, and wherein the measured value is determined from the receiver signal.