Metrohm 894 Professional CVS - Manual (Page 84)

6.4 Performing a Dummy cell test
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894 Professional CVS
Figure 46 Do not touch the drive disk
Use one hand to hold the rear of the measuring head arm and use
the other hand to insert the new measuring head into the connector
plate of the measuring head arm.
The measuring head must snap into place with an audible click.
5
CAUTION
If the measuring head arm is lowered carelessly, this may result in
injuries to the hand.
Make sure that you do not trap a finger between the measuring
head arm and the instrument housing.
Lower the measuring head arm again.
6.4 Performing a Dummy cell test
Should you note any problems or irregularities during or after determina-
tions (e.g. noisy curves), you can perform a dummy cell test. In this test,
the hardware and the electrode cables up to the measuring head are
checked; this allows potential problems to be localized or excluded. The
electrodes are not tested with the Dummy cell test.
Proceed as follows:
1 Load the Dummy cell test method template in viva.
2 Plug the three electrode cables onto the contacts of the dummy cell
(6.2813.050).
Observe the correct assignment of the electrode cables (WE, RE and
AE).