ALTANA Pendulum Hardness Tester Manual - Handbuch (Seite 12)

11
3. Setting up the instrument
• Unpack the instrument and check for possible
transport damage.
• Before starting make sure delivery is complete.
The pendulum tester is delivered calibrated and
ready for use. Only the protective cover needs to
be mounted after delivery.
Pendulum hardness testers are as sensitive as
precision balances, therefore a vibration free
position on a special table suitable for balances is
recommended.
After installing the instrument on a suitable
location, remove the protective cover.
• Plug in the power supply and switch on the
instrument.
• Balance the instrument properly by turning the
screw feet according to the bubble level on top
and lock it with the counter nuts (open-ended
wrench size 10)
• For testing according to Koenig, mount the wire
release at 6° mark of the scale, for Persoz at 12 °.
• Clean the balls of the pendulum and the
adjustable glass plate with alcohol.
• Place the glass plate on the lifting table.
• Raise the lifting table to the stop.
• Turn the handle by 180° to the stop position.
The handle sits horizontally and points forward.
• If the bubble level is exactly horizontal, the
glass plate is also in a straight position.
• Lower the lifting table by turning the handle.
• Place the pendulum exactly with the small
holes on the pins of the lifting table, the
marking arrow on the bar of the pendulum
must point to the front. If it is placed the wrong
way, the light barriers and the counter are
inoperable.
Setting up the instrument
English