Measurement / Operation; Determination Of Measured Values - Xylem wtw CarboVis 701 IQ TS Operating Manual

Measurement / Operation

24
4 Measurement / Operation
4.1

Determination of measured values

Physical sensor, series number xxx
Absorbance spectrum
of zero adjustment
Main
sensor
software
Main sensor meas. mode
(algorithm)
Main sensor raw value
User calibration data
of main sensor
Meas. value of main sensor
Fig. 4-1 Determination of measured values
During a measurement, the absorbance spectrum of the test sample is recorded
and set against the stored absorbance spectrum of a zero adjustment (measure-
ment in ultrapure water). The algorithm for the calculation depends on the
selected application and/or the measuring location. The resulting raw value can
be adjusted to an independent reference measurement with the aid of a so-
called user calibration.
Absorbance spectrum
of measurement
Second. sensor
& virtual sensor
meas. mode (algorithm)
Secondary sensor
& virtual sensor
User calibration data
of secondary sensor
& virtual sensor
Meas. value of sec. sensor
& virtual sensor
IQ Sensor Net
CarboVis 70x IQ TS
Second. sensor
& virtual sensor
software
raw value
ba75950e03 05/2017