Planmeca Proline CC, Technical Manual

Page: 10 / 207

Chapter A - GENERAL & TECHNICAL DATA
A-4 Planmeca Proline CC panoramic x-ray
Technical Manual
4 USER’S STATEMENT FOR PLANMECA PROLINE CC PANORAMIC
X-RAY
Radiation leakage technique factors
The maximum-rated peak tube potential is
80 kVp
and the maximum rated continuous tube cur-
rent is
1.2mA
for the maximum-rated peak tube voltage.
Minimum filtration
The Radiation port contains filtration of
1.5mm aluminum
. The measured half-value layer is
0.52mmAl
at 80kVp. The measured value corresponds to aluminum equivalent of
2.5mmAl
.
Rated line voltage
100, 117, 220-230, 240V
~
±10%
. Line voltage regulation 10%.
Maximum line current
Maximum
15
Amperes at 100 V
~
, 8A at 230 V
~
Technique factors that constitute the maximum line current condition
80kV / 12mA
Generator rating and duty cycle
1.5kW
, duty cycle approximately
1:10
. The wait period is calculated using the following formula:
t
w
= f(HS
MAX
- HS
1
) - f(HS
0
)
where HS
MAX
= maximum tube anode heat storage capacity (28 kJ)
HS
0
= current tube anode heat storage
HS
1
= heat storage caused by next intended exposure (kV x mA x s)
f = tube anode cooling rate as a function of heat storage (given by tube manufacturer)
Maximum deviation of peak tube potential from indicated value
±2.5kV
Maximum deviation of tube current from indicated value
±1mA
Maximum deviation of exposure time from indicated value
±5%
DEFINITION OF MEASUREMENT CRITERIA
Exposure time
The beginning and end points of the exposure time are defined at
70%
of the peak radiation
waveform measured with a calibrated x-ray monitor.
Peak tube potential
Is defined as the measured high voltage mean value measured with a calibrated non-invasive
kVp meter.
Tube current
Is defined using the resistance and voltage over the feedback resistor measured with a calibrated
multimeter. The mA value is then the voltage divided by the resistance.
The nominal x-ray voltage together with the highest x-ray tube current obtainable from the
high-voltage generator when operated at its nominal x-ray tube voltage
80 kV 12mA