Metrohm 730 Sample Changer - Manuel (Page 40)

3.2 Configuration
730 Sample Changer, Introduction 37
3.2.2 Rack Definition
Every sample rack used must be configured to guarantee auto-
matic rack recognition and assure that the rack positions are ap-
proached properly. The rack types available from Metrohm are al-
ready predefined and can easily be supplemented or altered.
If racks of the same type are to be configured differently, each
rack must be assigned a different code and the rod magnets on
the bottom of the sample rack must be arranged accordingly.
In this way a sample rack can be predefined for various applica-
tions and the use of the wrong rack can be avoided.
Rack number
Up to 16 different rack configurations can be stored in the sample
changer.
Rack code
The rack code is used for automatic rack recognition. A code can
be assigned only once. The standard racks that are supplied by
Metrohm already have a predefined code (see Instructions for
Use, page 104). The rack code is a 6-place binary pattern with the
digits 0 and 1 and this has to correspond to the order of the rod
magnets. The digit 1 stands for a magnet which is inserted and 0
signifies that no magnet is inserted. 63 different codes are possi-
ble (000001 to 111111).
bottom view
Rack type
The rack type or the rack name points to an internal position table
in which the positions of the individual beakers in the rack is de-
fined. Metrohm racks have the following scheme for the type defi-
nition:
MXX-Y (XX = Number of beakers, Y = special code, 0 for single-
row, 1 for double-row and 2 for triple-row standard racks)
For example: M12-0 indicates a single-row normal Metrohm rack
with 12 beaker positions.
Magnets inserted
In this example the
code is:
000110