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Section A
5.4.
PERFORMANCE DATA
5.4.1. Exposure geometry data (Pan mode)
Distance from focal spot to mechanical rotational centre: 350 mm
Distance from focal spot to film: 505 mm
Distance from focal spot to secondary slit: 497 mm
Inclination of central X-ray with respect to horizontal: 5
Occlusal plane height adjustment: 1000 - 1800 mm
Distance from focal spot to primary collimator: 94 mm
5.4.2. Exposure geometry data (Ceph mode)
Distance from focal spot to film: 1500 mm
Distance from focal spot to centre of cephalostat: 1350 mm
Height adjustment of ear center plane with respect to floor:
1000-1800 mm
Distance from secondary collimator to digital sensor: 375 mm (DDE
versions only)
5.4.3. Image quality
Maximum resolution (at the centre of the focal through) in standard
panoramic mode and using the recommended film-screen
combination (Kodak Lanex Medium - Kodak T-MAT-G or equivalent)
approximately 2.2 lp/mm.
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5.4.4. X-ray tube
Tube type:
Focal spot size:
Anode angle:
Anode material:
Rated peak tube potential:
Anode heat storage:
Max anode heat dissipation rate:12 kHU/min
For the cooling data see page AZ-4.
5.4.5. Tubehead
Weight: 10 kg. (4,1/2 lbs)
Duty cycle: 1/20, one exposure per 4 min, at full power operation.
Leakage radiation: less than 250 µGy/h (28 mR/h) at 1 m from focal
spot in any direction.
Inherent filtration: 2.5 mm Al equivalent (minimum).
Reference current time product: 1.12 mAs at 84 kV.
Current time product: 0.48 mAs at 60 kV.
5.4.6. X-ray field dimensions
Please refer to the Operator's Manual.
5.4.7. Power generation
High tension and filament power generation is performed by means
of solid state medium frequency converter technology (25 kHz).
All electronic parts are included in a single board.
The converter provides automatic stabilization with respect to mains
fluctuations.
In addition it is protected against the following:
-
Mains transients.
-
Output short circuit (cabling, tube flashover, etc.), through
current limitation to max. 11A.
-
Open filament circuit
-
Open kV feedback signal.
-
Open mA feedback signal.
-
Overheating of power electronics (>80°C).
i
n
(03.0)E
ORTHORALIX 9200
Service Manual
GX 100-20 DC
0.5 (IEC 336/1993)
5°
Tungsten in copper body
100kVp
25 kHU
DENTSPLY Gendex
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