Filling The Cartige With Abrasive Slurry; Dosing Parameters; 2.10 Manual Dosage With A Pipette - BAQ kaloMAX NT II Manual

High-precision wear resistance tester
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BAQ kaloMAX NT II
2.8

Filling the cartige with abrasive slurry

Take care that the slurry has as few air bubbles as possible, when filling the cartidge.
Close the cartidge with a blind plug and then fill it maximum half-full.
Push the plunger down the cartridge until it touches the abrasive slurry. The air in the
cartridge can escape at the side of the plunger . Take care, that there is no air between
the plunger and the abrasive slurry! Be careful, that the abrasive slurry is not pressed
between the plunger and the cartridge wall. Now the cartridge adapter and the needle
are fastened.
2.9

Dosing parameters

Before the dosing process can start, pressure and duration must be set.
Parameters for a drop with a mass of about 35 mg :
Pressure:
Duration:
The pressure is adjusted by a fine setting valve at the rear side of the device. The
duration can be programmed in the menu.
When the cartridge has just been filled, the slurry must first be pressed into the
needle. Therefore, no drop will be build the first few times the START-button is
pressed. It is not recommended to use the first 5-6 drops for measurements.
The drop size is constant with a tolerance of about  1 mg.
A single drop can be released by pressing the STOP-button when the main screen is
displayed unless a grinding is in progress.

2.10 Manual dosage with a pipette

A rubber bulb is attached to a clean pipette. Only clean pipettes should be filled with
abrasive slurry (draw up). The abrasive slurry should be stirred up with the provided
0.45 bar
150 ms
Manual
Page 10

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