Reference Manual

Table Of Contents

Draft

Operation 21Q3 Dosing Module

5.2 Installing the sealing insert

Always install a sealing insert (1) to avoid air drafts in the

weighing chamber.

5.3 Powder dosing

5.3.1 Using dosing heads without a vial

Most powder dosing heads can be used with or without a vial,

since the neck of the dosing head can accommodate a certain

amount of powder. Using dosing heads without vials is partic-

ularly relevant when dosing very small quantities. In this case,

they need to be closed using the provided spare cap (1). The

neck (2) of the QH002, QH008, QH010, and QH012 dosing

heads have a capacity of 2ml, 8ml, 10ml, and 12ml, respec-

tively.

5.3.2 Refilling the vial of a powder dosing head

Software functions to easily refill the dosing head are available through the terminal of the balance. Consult the

Reference Manual (RM) of the balance for more information.

The dosing head is removed.

1 Turn the dosing head upside down.

2 Gently tap on it to let the remaining powder flow back into the vial.

WARNING: Injury or contamination from hazardous substances. Take the appropriate measures to

avoid injuries and contamination.

Unscrew the vial.

4 Place the vial on the weighing pan.

5 Press

to tare the balance.

6 Fill the vial with the desired amount of the appropriate substance.

7 Note down the weight of added substance or tap the corresponding button on the terminal.

8 Remove the vial from the weighing pan.

9 Holding the vial upright and the dosing head upside down, screw the dosing head onto the vial.

10 Turn the dosing head upright and install on the dosing module.

11 On the terminal, edit the settings of the dosing head to include the added amount of powder.