Planmeca Proline EC ceph, Техническое руководство

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Chapter A - GENERAL & TECHNICAL DATA
Planmeca Proline EC X-ray unit A-5
USER’S STATEMENT FOR PLANMECA PROLINE EC PANORAM-
Technical Manual
4 USER’S STATEMENT FOR PLANMECA PROLINE EC
PANORAMIC X-RAY
Radiation leakage technique factors
The maximum-rated peak tube potential is
80 kVp
and the maximum rated continuous tube
current is
12mA
for the maximum-rated peak tube voltage.
Minimum filtration
The Radiation port contains additional filtration of at least
1.5 mm aluminium
.
Total filtration min.
2.5 mmAl
.
When the X-ray beam is attenuated with the 3 mmAl the dose is reduced by factor
0.50-0.56
Maximum attenuation equivalent of the front panel of the
panoramic cassette holder
0.5 mmAl
Rated line voltage
100-132 V~, 180 - 240 V~.
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 for-
mula:
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 manufac-
turer)
Maximum deviation of peak tube potential from indicated value
±5%
Maximum deviation of tube current from indicated value
±(5% + 0.5mA)
Maximum deviation of exposure time from indicated value
±8%