Annex A Technical Specifications - hatch X-RAY Operating Manual

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