ALTANA Pendulum Hardness Tester Manual - Handbuch (Seite 17)

16
Adjustment for König
6. Adjustment for König
6.1. Standards
ASTM D 4366
DIN EN ISO 1522
Pendulum and light barrier are adjusted at
delivery. A periodical recertifi cation by authorized
service personal is recommended for equipment
monitoring.
6.2. Duration of pendulum oscillation
According to the Standard one pendulum
oscillation is specifi ed with 1.4 s ± 0.02 s. This
value can be verifi ed by the following procedure:
• Mount the wire release at 6 °
• Raise the lifting table to the stop and check the
zero position.
• Move the pendulum to 6 ° position and fi x it
with the wire release. Press start button.
• Release pendulum
• Repeat the procedure with the 3° osc. mode. .
After 100 oscillations the elapsed time must be
140 + 2s. If not, please call a service technician
for adjusting.
6.3. Damping time
The damping time is the change of oscillations
from 6° to 3°.The damping time from 6° to 3° must
be 250 ± 10s on the glass plate (for tolerance
please check actual version of the standards.)´This
can be verifi ed with the following procedure:
• Level the instrument with the positioning feet
exactly horizontally control of the bubble level.
• Move the pendulum to 6° position and hold it
with the wire release.
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