Reference Manual

Draft
Design and Function 9Q3 Dosing Module
3 Design and Function
3.1 Function description
The Q3 dosing module can be added to any XPR analytical balance to perform automatic dosing of powders
and/or liquids. The powder or liquid dosing head is attached to the dosing module and stays outside of the
weighing chamber during the whole dosing procedure. The top door of the balance is replaced by a top panel
with an opening through which the powder or liquid is dosed. The top panel moves down with the dosing
module and the dosing head until the distance to the sample vessel is appropriate for dosing. The weighing
chamber is therefore closed during the whole dosing procedure, providing the best possible dosing perfor-
mances.
When liquid is dosed, the QL3 pump and QLL kit for bottle are used together with the Q3 dosing module. The
QL3 pump is used to build pressure in the bottle. When the pressure is high enough, the micro dispensing
valve in the liquid dosing head opens and liquid can ascend the liquid tube. Several pumps can be connected
to the balance simultaneously.
3.2 Overview
1
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9
8
1
Dosing lift
6
Powder dosing head
2
Dosing module
7
Sealing insert
3
Top panel
8
Dosing head holder
4
Vial adapter
9
Dosing head release button
5
ErgoClip adapter holder
en