Metrohm Multi-Mode Electrode pro - Manual (Page 24)

3.4 Mounting the MME pro onto the measuring head
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6.1246.120 Multi-Mode-Electrode pro
4 Closing the screw cap
Insert the screw cap into the mercury refill opening and fasten it with
the wrench as far as it will go.
3.4 Mounting the MME pro onto the measuring head
Before you can adjust the needle valve and test the electrode function,
you must mount the MME pro onto the measuring head of the instru-
ment.
Note
Before you can mount the MME pro onto the measuring head of the
instrument, you must place an empty measuring vessel into the meas-
uring stand.
If the measuring vessel is not empty, then liquid can enter through the
capillary into the MME pro. If this happens, the MME pro must be
extensively cleaned and the capillary must be disposed of.
￭ Mount the MME pro onto the measuring head according to the
instructions in the manual of the instrument.
￭ Connect the inert gas tubings with the connectors (1-8) and (1-12).
￭ Plug the working electrode cable with the attached adapter onto con-
nector (1-13).
For a detailed description see the manual of the instrument.
3.5 Adjusting the needle valve
Adjusting the needle valve
Before you can adjust the needle valve, the following requirements must
be fulfilled:
￭ The MME pro is mounted onto the measuring head of the instrument
and the inert gas supply is connected.
￭ An empty measuring vessel is placed beneath the MME pro.
￭ The instrument is connected to a PC on which the 797 VA Computrace
software is installed and running.