MinXray PowerPlus HF120HPPWV - Page 2

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16.0 STANDERD TEST DATA
LEAKAGE RADIATION
a. Test method:
1. Set kV to 120 kV, and timer to 1.0 sec.
2. Set x-ray dosemeter as following settings.
distance: 1 m, range: 0 – 0.1 mR ionization chamber: 35
3
cm
3. Set chamber as following direction.
4. Close collimator set, and make exposure.
5. Measure value of mR.
Calculations: mR/h = ( raw test data ) mR × 3600 × ( duty cycle )1 / 60
b. Instruments: Model 37D Portable X-ray dosemeter Serial No. 5 - 6
Manufactured by D. A. Pitman Ltd.,
top veiw B C D
A E
H G F
I J K
side view
L M N
c. Sample raw test data:
A B C D E F
G
mR 0.004 0.011 0.016 0.006 0.005 0.004 0.042
H I J K
L
M N
mR 0.016 0.048 0.030 0.009
0.044
0.028 0.008
d. Calculations: mR/h = (raw test data)mR x 3600 x (duty cycle) 1/60
A B C D E F
G
mR/h 0.24 0.66 0.96 0.36 0.30 0.24 2.52
H I J K
L
M N
mR/h 0.96 2.88 1.80 0.54
2.64
1.68 0.48