Jenway 7315 Manual Italian User Manual
Page 37
The wavelength to be analysed can also be entered
manually. This can be done in two ways; firstly by pressing
the key below the
wavelength icon in the spectral
points analysis menu. This opens a number entry screen
where the wavelength can be input manually. Use the
keys at the bottom of the screen to select the digit to be
changed and use the keys adjacent to the
arrow icons to
increase or decrease the number. Once the wavelength
has been entered press the key adjacent to the
tick icon
to save and return to the spectral points analysis menu.
Secondly, the wavelength can also be entered manually
in the
spectral points analysis table by pressing the
key adjacent to the location in the table where the result
is to be stored. This opens a number entry screen where
the analysis point can also be deleted by pressing the key
adjacent to the
delete icon.
Use the keys at the bottom of the screen to select the digit to be changed and use the keys adjacent to
the
arrow icons to increase or decrease the number. Once the required wavelength has been entered or
the analysis point deleted press the key adjacent to the
tick icon to save and return to the spectral points
analysis table. If a wavelength entered is outside the scan range the
check number warning icon will
be displayed before the wavelength is automatically adjusted to within the range.
To view the points in the spectral points analysis table
press the key adjacent to the
spectral points analysis
table icon. Only three points can be displayed on the
screen at one time; to view the other points in the table
press the key below the
down arrow icon. To view the
first three points again press the key below the
up arrow
icon. The table displays the wavelength and either the
corresponding absorbance or % transmittance, as well
as the order in which the points were selected or entered.
To change the photometric value between absorbance
or % transmittance press the key below the
ABS icon or
%T icon. Pressing the key adjacent to the tick icon will
save any changes made and return to the spectral points
analysis menu.
It is possible to access spectral points analysis before a scan is performed. Points to be analysed can be
pre-selected from the blank axis, or entered manually in the spectral points analysis table. When the
scan has been performed the points for analysis will already be in the table with the corresponding
absorbance or % transmittance values.
37
4
0
4
2
5
487
500
447
1
2
3
0.513
0.028
0.855
ABS
(nm)
%T
445
442
439
4
5
6
0.843
0.733
0.515
ABS
(nm)
%T
0
0
5
0