Metrohm tiamo 2.2 Manual - Manual (Page 748)

5.6 Commands ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
734 ￭￭￭￭￭￭￭￭ tiamo 2.2
[Properties]
Opens the dialog window External measured value # in which the
parameters for the external measured value can be edited (see Chapter
5.6.3.11.2, page 880).
[Delete]
Deletes the external measured value selected in the table.
5.6.3.4.6.10 SET Upol - Fix endpoint evaluation
Dialog window: Method ▶ SET Upol ▶ Properties... ▶ Additional evaluations ▶ Fix
endpoint evaluation ▶ [New]/[Properties] ▶ Fix endpoint evaluation #
Quantity
Selection of the fixed measured quantity to which the associated values for
the other quantities are to be interpolated from the list of measured points.
Selection Measured value | Time | Volume
Default value Measured value
Fix value
Value of the fix endpoint.
Measured value
Range
-200.0 ... 200.0 µA
Time
Range
0.0 ... 999999.9 s
Volume
Range
0.00000 ... 9999.99 mL
5.6.3.5 KFT
5.6.3.5.1 KFT - Overview
Menu item: Method ▶ Paste ▶ New command...
Command for volumetric Karl Fischer Titrations.
Principle
With this command, volumetric titrations for determining the water content
by the Karl Fischer method with automatic conditioning are carried out. A
typical feature of the Karl Fischer titration is the controlled reagent addition,
which depends on the control difference (current measured value – end-
point), with the aim of reaching the measured value given as being the
predefined target endpoint as quickly and accurately as possible. Overtitrat-
ing is avoided to a great extent. The titration termination at the endpoint
takes place either drift-controlled or after a waiting period. The volume
added up to the endpoint gives the calculable reagent consumption.