500 D 01/2012
7a
3.1.1 Special functions of certain keys
S
When the photometer has just been switched on, pressing key
S
calls up the
last-used method.
Pressing key in method selection mode directly calls up the extinction pro-
gram.
MEM.
Pressing key
MEM.
in method selection mode calls up memory administration.
Pressing key
in method selection mode calls up special (user-defined)
methods.
OK
When the photometer has just been switched on, pressing key
OK
displays the
last stored value.
3.2 Measuring procedure
Characteristic test data
The characteristic data of all
NANOCOLOR
®
tests are stored in the
NANOCOLOR
®
500 D. After the instrument is switched on and has reached the method selection
mode, the desired methods can be activated by inserting the tube test (barcode
tests) or by input of the 3-digit method number. The permanent programming of the
NANOCOLOR
®
500 D comprises all characteristic data of the desired test:
analytical parameter; factor; blank or base-line value; dimension; cuvette-
dependent measuring range; wavelength; reaction time; linearity of the calibra-
tion; measuring direction
Method call-up
Many analytical parameters can be measured with different cuvette sizes, measur-
ing ranges, dimensions and measuring wavelengths. The method can be called up
in three possible ways:
1. Insert a barcoded tube test and select the characteristic data using the
U
/
U
keys. The required option is confirmed by pressing
OK
.
2. Call up the method with 3 digits or using keys
U
/
U
. Again the characteristic
data are selected using keys
U
/
U
. The desired option is confirmed by press
-
ing
OK
.
3. Select the desired option by calling up the 4-digit method number. Now the op-
tion cannot be changed with keys
U
/
U
.
When activating a method for the first time, the required submethod has to be se
-
lected either with keys
U
/
U
and subsequent confirmation with key
OK
or by
direct input of the fourth digit of the method number. When next calling up the main
method, the photometer offers the last-used submethod (1st priority) and, if no other
key is pressed, automatically activates it. If you wish to select another submethod,
you can interrupt the automatic program sequence during a period of about 3 s by
pressing keys
U
/
U
and then select the required submethod using keys
U
/
U
or by direct input of the fourth digit of the method number.
