Metrohm IC Net 2.3 - Manual (Page 273)

6.28 844 UV/VIS Compact IC
IC Net 2.3 263
ample for the wavelength set for measuring channel
1:
akt
Int
zero
Int
Abs
1
1
log
λ
λ
=
where:
zero
Int
1 λ
The intensity measured when recording
the zero spectrum at the wavelength set
for measuring channel 1.
akt
Int
1 λ
The actual intensity measured at the
wavelength set for measuring channel 1.
If you are working with a reference channel (can be
activated on the subtab Configuration ) the formula is
as follows:
refakt
Int
refzero
Int
akt
Int
zero
Int
Abs
λ
λ
λ
λ
log log
1
1
− =
where:
refzero
Int
λ
The intensity measured when recording
the zero spectrum at the wavelength set
for the reference channel.
refakt
Int
λ
The actual intensity measured at the
wavelength set for the reference channel.
Intensity The intensity (y-axis) is given as a function of the wa-
velength (x-axis).
Zero A click on Zero shows the last zero spectrum to have
been recorded (a zero spectrum is recorded by click-
ing on the button on the subtab Man-
ual/Detector of the 844 control window).
The zero spectrum is a reference spectrum. It should
be recorded at a time at which there is no sample in
the measuring cell. It is used for calculating the ab-
sorption spectrum (see above formulas).
Wavelength, nm Sets the shown x-axis range
Entry range: 190 ... 900 nm , (standard settings 190
nm and 900 nm, Upper limit must be higher than
Lower limit ).
Spectrum Sets the shown y-axis range
Standard settings: 0 ... 100.
Spline Activates curve smoothing.
<Apply> Send values to the 844 UV/VIS Compact IC.