7 dosing auxiliary solutions, Dosing auxiliary solutions – Metrohm 862 Compact Titrosampler User Manual
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4.4 Automation sequences
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862 Compact Titrosampler
4.4.7
Dosing auxiliary solutions
The addition of an auxiliary solution can be carried out with a 6xx/7xx
Dosimat or a Dosimat plus. This is connected via remote cable to the 862
Compact Titrosampler .
The triggering of the dosing is accomplished by switching on the Activa-
tion pulse which is put out at the beginning of a titration. The dosing
proceeds automatically and is not monitored by the 862 Compact Titro-
sampler. A waiting time must be observed in each case for the duration of
the dosing. Define a sufficiently long Start delay time. Both settings can
be found under Menu
▶ Parameters ▶ Start conditions, see page
130 ff. Select a start delay time that is sufficiently large so that the entire
volume is dosed before the titration begins.
Note
The dosing of an auxiliary solution is parameterized on the Dosimat. An
8xx Dosimat plus must be operated in XDOS mode, a 6xx or 7xx
Dosimat in DIS mode. Enter the dosing volume on the Dosimat and
select a dosing rate as high as possible.