2 set - control range – Metrohm tiamo 2.1 Manual User Manual

Page 655

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5 Method

tiamo 2.1

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641

Note

This command is used for rapid routine determinations when the endpoint
does not change throughout a series or when an excess of reagent must
be avoided.

Commands
Depending on the measured value one of the following four SET commands
can be selected:

SET pH
Potentiometric pH measurement with pH electrodes (measured quantity
pH).

SET U
Potentiometric voltage measurement with metal electrodes (measured
quantity voltage U).

SET Upol
Amperometric measurement with selectable polarization voltage (meas-
ured value current I).

SET Ipol
Voltametric measurement with selectable polarization current (measured
quantity voltage U).

5.6.3.4.2

SET - Control range

Menu item: Method

SET Properties... Control parameters

Set a large control range for steep curves and a small control range for flat
ones. A good approximation for the start of the control range is given by
the point where the tangents intersect.

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