Sirona Dental Systems GmbH
Maintenance Instructions
62 15 144 D 3507.101.01.03.02
7
Exposure Time Verification and kV-Verification
(conventional radiography technique)
•
For testing the exposure times a Digital Dosimeter is required (PTW Diados).
•
Place the Dose Detector in a distance of 8" in front of the Tube Head.
•
Switch unit ON.
•
CAUTION RADIATION!
Make an exposure with:
Voltage: 60
kV
Exposure time:
0.4 sec
•
The reading should be
0.4 sec ±0.04 sec.
kV = 60kV ±6kV.
Record reading
•
Switch unit OFF
•
If the measured Radiation Time is not within specified tolerance,
see Service Manual, chapter ”
Exposure Time Verification
”.
•
If the measured kV Verification is not within specified tolerance,
see Service Manual, chapter ”
kV Verification
”.
0.40
seC
SSD
Focus marking
Dose Detector
SSD = Source to
Skin Distance 8"
