Metrohm 855 Robotic Titrosampler - Manual (Page 50)

6.1 Beaker sensor ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
42 ￭￭￭￭￭￭￭￭ 855 Robotic Titrosampler
6 Appendix
6.1 Beaker sensor
Every tower of a Sample Processor is equipped with a beaker sensor detect-
ing the availability of a sample vessel in front of the tower. An infrared sensor
identifies devices of various materials if they are located in a correct position
in the front of the tower. In the rack configuration of the control device or
the control software, the setting 'Beaker sensor' Tower must be selected.
The beaker test is carried out whenever a rack position is moved to in a
method run.
Figure 32 Beaker sensor on the tower
The beaker sensor on the tower can only be used with single-row sample
racks.
6.2 Rinsing nozzles
Using rinsing nozzles is very effective in order to rinse sample vessels (with
sensors and buret tips) efficiently. Rinsing nozzles are available in two model
versions:
￭ 6.2740.020 spray nozzle
For the fine-spraying of the rinsing solution. The nozzle has a small ball
at the opening. The distribution (but also the backpressure) of the rinsing
liquid is clearly higher than the one of a rinsing nozzle.
￭ 6.2740.030 rinsing nozzle
The rinsing liquid is applied as a fine jet for optimal removal of layers on
electrodes and on titration accessories.