HATCH X-RAY Operating Manual
51
ANNEX
A
TECHNICAL SPECIFICATIONS
Tube-Head Specifications
Generator Type
High Frequency, Microprocessor Controlled,
Constant Potential (DC)
Control of High Voltage
Closed Loop
High Voltage Range
60kV – 70kV Settable (Step size 1kV)
Accuracy of High Voltage
< ± 5%
High Voltage Ripple
Frequency
> 200kHz
High Voltage Ripple
Low Frequency Ripple (≤ 10kHz) shall be
less than 2% p to p measured @ 70kV/8mA
High Frequency Ripple (≤ 50kHz) shall be
less than 10% p to p measured @ 70kV/8mA
High Voltage Rise Time
< 3ms
Control of Tube Current
Closed Loop
Tube-head current range
4mA – 8mA Settable (Step size 1mA) (7-8mA
@ time ≤ 200ms)
Accuracy of current
< ± 5% (± 10% for time <40ms)
Maximum Exposure Time
3.5s upto 6mA (7 & 8 mA 200ms Max)
Minimum Exposure Time
10 ms
Exposure Timer Accuracy
± 10%
Maximum Electrical Input
560W at 70kV, 8mA
Duty Cycle
1:15 Adaptive & auto limit based on
temperature.
Additional X-Ray filtration
Minimum 2.0 mm Al equivalent @ 70 kV
Total X-Ray filtration
>2.5 mm AL/70kV
Minimum source to skin
distance
9”(230mm) ± 0.2”(5mm) (in-built)
12.2”(310mm) ± 0.2”(5mm) with optional
cone
X-Ray field (at collimator tip) Circular, diameter ≤ 60 mm @ SSD of 8.6”
(230mm)
Leakage radiation @ 1m
< 0.88 mGy/h (100 mR/h)
Содержание X-RAY
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