22
D01-060en202008 Manual nanoFlu
Use
Malfunction &
Maintenance
Commis-
sioning
Introduction
General
Information
FA
Q
Technical Data
W
arranty
Customer
Service
Contact
Keyword
Index
Accessories
Calibration
Calibration
//
nanoFlu
4. The scaling factor can be calculated using the following equation
scaling factor =
With
lab
for the labora
tory values and
measuredvalue
for the values output by the sensor.
For the previous example in the figure, this means:
scaling factor =
= 3
5. If a
non-contaminated sample is not available, at least two samples with very different levels of contami
-
nation are needed. In this case, you will first calculate the scaling factor.
scaling factor =
C
alculation of the offset without zero-point measurement (1.):
offset = measuredvalue2 -
measuredvalue2
should be significantly larger than
measuredvalue1
. The offset can also be found using
the abscissa of the straight line (intersection with X axis). For the above example, this means:
scaling factor =
= 3
offset = 40 - = 40 - 30 = 10
(lab2 - lab1)
(measuredvalue2 - measuredvalue1)
lab
measuredvalue2 - offset
90
mg/L
(40 - 10)
mg/L
lab2
Scaling factor
90
3
90 - 30
40 - 20
Offset = 10 (Abszisse)
1
2
Laboratory value for the test substance [µg/L]
Measured concentration [µg/L]
Offset = 10 (abscissa)
Summary of Contents for nanoFlu
Page 1: ...nanoFlu OPERATING INSTRUCTIONS ...
Page 2: ......
