Specifications
4-2
p) SID: SID distance 1m in normal use, measured with the tape in the collimator.
q) Maximum continuous heat loss: 250W
r) Deviation between focus position and reference axis: ± 1°
4.2 Specifications of X-ray Tube
4.2.1 IEC classification: Class I, Type B
4.2.2 Main specifications
a) Electrical parameters
Circuit (neutral grounding) ……………………………………………………….………………………………...DC circuit
Operating voltage……………………………………………………………………….………………………………….40
-125 kV
Small focus…………………………………………………………………………………..…………………………………….....0.6 mm
Large focus…………………………………………………………….………………………………………………………….....1.8 mm
Energy input (at 1.0s)
Big focus DC…………………………………………………………………….………………………………………..…………5300 W
Small focus DC .............................................................……………............................................... .1270 W
b) Physical parameters
Total length……………………………………………………………………………….…………………………………………135 mm
Maximum diameter……………………………………………………….………………………………………………….....50 mm
Vertebral target
Target angle……………………………………………………………………………………………………………….....15 degrees
Structure…………………………………………………………………………………..…………………………………………tungsten
Inherent filtration……………….………..at least equivalent to 0.6 mmAL when voltage is 75 kV
X-ray coverage…………………………………………………………………………...430 × 430 mm at SID 900 mm
Weight (approx.)…………………………………………………………..…………………………………………………………400 g
Cooling………………………………………….....oil immersion (max. 60℃) heat exchange, oil cooling
Tube fixation…………………………………………….………………………………………….fixed insulation envelope
4.2.3 Maximum Rising Chart
As shown in Fig. 4-1.