Metrohm 730 Sample Changer - Manuel (Page 8)

1.3 Instrument Description
730 Sample Changer, Overview 5
The Connectors (rear):
Made by Metrohm Herisau
Switzerland
RS 232 Keyboard
Type 1.730._
Address
External Bus
0120/02 187
The External Bus address selector must be set to 0 (zero).
1.3.3 Sensors
Beaker test
Front view
Each tower of the 730 Sample
Changer is equipped with a
beaker indicator to detect the
presence of a beaker in front
of the particular tower. This
infrared sensor detects many
different materials, if any ob-
ject is placed in correct posi-
tion. This beaker test is car-
ried out after each MOVE op-
eration.
Magnetic rack code indicator
The magnetic sensor to detect
the individual rack codes is
mounted below the sample
changer's turntable.
The magnetic binary code of the
racks can only be read, if the
rack is in initial position and
therefore the magnet holder is
in accurate position right above
the rack code indicator.
For this reason the 730 Sample
Changer should be initialized
right after every rack change
by pressing the <RESET> key
or <ENDSEQ> followed by
<ENTER>.
Splash protection
Beaker indicator
Rack
Magnetic indicator
Manufacturing number
Magnet holder
External Bus
socket
External Bus
address selector
Serial
RS 232 interface
Keyboard
connector