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Metrohm 746 VA Trace Analyzer User Manual

Page 175

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5.3 Set Up

746 VA Trace Analyzer / 747 VA Stand

5-24

Softkeys

Meaning

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 are automatically 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).

Default

values

Reset parameters to default values

The parameters under

Settings

are reset to their default values.

>>

Switches

Switch to "Switches"

Switches the softkey bar to the setting of inert gas pressure, purging,
stirrer and electrodes.