Metrohm 746 VA Trace Analyzer - Manual (Page 180)

5.3.2 STAND
746 VA Trace Analyzer / 747 VA Stand
5-29
Softkeys Meaning
Exchange
position
Switch rinsing Dosinos to exchange position
The current position of the two rinsing Dosinos is shown in the pa-
rameter
Rinse unit pos. :
exch. Exchange position (dosing unit can be changed)
rinse Rinse position
To fill or empty the containers or to remove the dosing units from the
Dosinos, the Dosinos must be in the
exch. position. If the Dosinos
are in the rinse position, they have to be switched to the exchange
position by pressing .
After the solutions or the dosing units have been changed, the Dosi-
nos must be initialized by pressing
. All connecting
tubing up to the measuring vessel and the wash station are automati-
cally filled with rinsing solution.
Electr.
test
Electrode test
The electrode (MME or RDE) used in the 747 VA Stand is tested. The
electrode type must be specified for this:
DME DME (Dropping Mercury Electrode)
HMDE HMDE (Hanging Drop Mercury Electrode)
SMDE SMDE (Static Mercury Drop Electrode)
RDE RDE (Rotating Disk Electrode)
On successful completion of the test, the message Electrode test
ok appears in the system window, if any type of malfunction is found
the appropriate error message is shown (see section 7.3.2).
>>
Rack def
Switch to "Rack definition"
Switches to subpage "Rack definition" for setting the rack positions.
>>
Switches
Switch to "Switches"
Switches the softkey bar to the setting of inert gas pressure, purging,
stirrer and electrodes.
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