YSI NiCaVis 701 IQ NI - Manual (Page 25)

NiCaVis 70x IQ NI
Measuring / Operation
4 - 1 ba76132e01 03/2013
4 Measuring / Operation
4.1 Determination of measured values
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 (measurement 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 zero adjustment
Absorbance spectrum
of measurement
Physical sensor, series number xxx
Main
sensor
software Virtual
sensor
software
Main sensor meas. mode
(algorithm)
User calibration data
of main sensor
Main sensor raw value
Meas. value of main sensor
Virtual sensor raw value
Meas. value of virtual sensor
Virtual sensor meas. mode
(algorithm)
User calibration data
of virtual sensor
IQ Sensor Net