3.3 Photometry
Press [1] on the keypad in the main menu to enter the photometry mode. The
photometry submenu will be displayed on the LCD.
05/11/02 11:35 600.0 nm 0.854 ABS
Photometry
1 Parameter Setup
2 Sample Setup
3 Curve Setup
4 Print Setup
5 System Setup
6 Save Parameter
0 Forward
Select Function: _
To help you understand the variables for each sub menu option, the general
purpose/function of each option is outlined in Table 3-1.
Table 3-1 Photometry Options and Variables
Sub menu
Option
Variables Range Description of Function
Parameter
Setup
Data Mode
WL
T%, ABS, Conc
190 ~ 1100nm
Measures transmittance,
absorbance and concentration.
Wavelength for analysis
Sample
Setup
Name
02/11/02
Path Length
Unit Label
1-9,A-Z,*,-
,space,:,/, Not more
than 8 character
10mm
Not more than 6
character
Sample title.
Specify the concentration units
Curve
Setup
Curve Type
Curve Data
Num STDS
1st order
2nd order
Segment
K-factor
0.000 ~ 9999
2 ~ 20
Linear-squares fit (y=k
1
x+k
0
)
Quadratic fit (y=k
2
x
2
+ k
1
x+k
0
)
Straight lines interconnecting
curve points
Concentration of each standard
Number of standards used for
fitting the selected curve type
3-5
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