Altana Pendulum Hardness Tester Manual User Manual download pdf (Page 19)

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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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