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8 Starting up
8.1 Functional test
72
8.1.6
Checking exposure time and high voltage kV
Auxiliary devices required
● Suitable radiation meter.
Examples:
– Mini-X
– PMX I-D
– MOM
Preparation
1. Switch the X-ray unit on.
2. Wait until the self-test is finished (operational readiness signal must
be lit). The display reading shows the radiation time and a patient
symbol).
3. Set an exposure time between 0.25 and 0.4 seconds. The display of
control board DX4 must be clearly visible
4. Position the measuring instrument (B) in such a way that the active
sensor measuring surface has a distance of 50 cm (19.7") from the
focus (A) of the X-ray tube assembly.
5. Switch on the measuring instrument.
Dentsply Sirona
Installation Instructions Heliodent Plus
62 14 972 D 3507
D 3507.031.01.15.02 03.2018
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