Metrohm tiamo 1.2 Manual - Handbuch (Seite 407)

Commands 381
SET
Command for Set Endpoint Titrations ( SET ).
Principle
With this command titrations to one or two preset endpoints are carried out. The
termination of the titration at the endpoint is either drift-controlled or after a waiting
period. The volume that has been added when the endpoint is reached gives the
calculable reagent consumption.
Reagent addition takes place in three phases during the titration:
• Initial addition
During this phase the dosing rate increases continuously. It starts with the
Minimum rate and increases to the Maximum rate .
• Continuous addition
In this phase addition is carried out at the Maximum rate until the Control
range is reached.
• Control range
In this range addition is finely controlled. Shortly before the end point is
reached addition is only carried out at the
Minimum rate (see "Control
range").
Note
This command is used for rapid routine determinations when the end point does
not change throughout a series or when an excess of reagent must be avoided.