User's Statement For Planmeca Intra - Planmeca Intra User Manual

20.3

User's statement for Planmeca Intra

Radiation leakage technique factors
The maximum rated peak tube potential is 70 kV and the maximum rated continuous tube
current is 0.53 mA for the maximum rated peak tube potential.
Minimum filtration
The radiation port contains an added 1.0 mm aluminium filtration. The measured half-
value is 0.50 - 0.55 at 70 kV. The measured value corresponds to an aluminium equivalent
of 2.0 mm.
Rated line voltage
100, 110-117, 220-240 V~ ±10%. Line voltage regulation 10%.
Maximum line current
6.1 A at 230 V~, 12.2 A at 115 V~
Technique factors that constitute the maximum line current condition
70 kV, 8 mA
Generator rating and duty cycle
1.4 kW, duty cycle 1:15. The wait period is controlled automatically by calculating it
according to the formula tw = 15 x texp.
Maximum deviation of peak tube potential from indicated value
± 2.0 kV
Maximum deviation of tube current from indicated value
±10%
Maximum deviation of exposure time from indicated value
±10%
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 high voltage mean value measured with a calibrated non-invasive kVp
meter.
Tube current
Is defined using the voltage over the feedback resistor measured with a calibrated
multimeter. The mA value is calculated by dividing the voltage by the resistance value.
User's Manual
TECHNICAL SPECIFICATIONS
Planmeca Intra X-ray Unit 55