ALTANA Pendulum Hardness Tester Manual - Handbuch (Seite 19)

18
Adjustment according to Persoz
7. Adjustment according to Persoz
7.1. Standards
ASTM D 4366, DIN EN ISO 1522
7.2. Duration of oscillation
According to the Standards the time of one
oscillation is one second at 12°.
7.3. Damping time
The damping time from 12° to 4° must be 430 ±
10 seconds on the glass plate.
This value can be controlled with the procedure
described in chapter 3.
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