Fluke Biomedical TNT 12000 - Manual (Page 136)

TNT 12000
Users Manual
H-4
Values of the correction factor k
Q
, for the radiation qualities as determined by
measurement at the PTB.
RQR – Series
Beam Quality
IEC 61267
Mean Energy, Air Kerma
(keV)
k
Q
(Q
n
/Q
70
)
RQR 2 26.2 1.019
RQR 3 29.0 1.012
RQR 4 32.0 1.005
RQR 5 34.8 1
RQR 6 37.8 0.996
RQR 7 41.0 0.992
RQR 8 44.2 0.989
RQR 9 50.8 0.984
RQR 10 61.2 0.979
RQA – Series
Beam Quality
IEC 61267
Mean Energy, Air Kerma
(keV)
k
Q
(Q
n
/Q
70
)
RQA 3 37.7 1.021
RQA 4 44.6 1.009
RQA 5 51.0 1
RQA 6 57.4 1.001
RQA 7 62.9 0.997
RQA 8 68.0 0.992
RQA 9 78.4 0.994
RQA 10 93.2 0.996
96035B Ion Chamber
Dimensions (Diameter x Height) ........................... 63.5 mm x 13 mm
TNT 12000 DoseMate with 96035B Ion Chamber
The following measurement and calibration nominal ranges apply.
Ranges
Dose ................................................................... 1 μ Gy – 180 mGy
Dose Rate........................................................... 1 μ Gy/s – 180 mGy/s
Nominal ranges of use for other factors
Conventional Diagnostic
Anode Quality Range of Tube Voltage Reference
W RQR2 - RQR10 40 - 150 kV IEC 61267
W RQA3 - RQA10 50 - 150 kV IEC 61267
Mammography
Anode Total Filtration Range of Tube Voltage PTB Reference
Mo 30 μ m Mo 20 - 50 kV MMV 20 - MMV 50
Mo 30 μ m Mo + 2 mm Al 20 - 50 kV MMV 20 - MMV 50
Nominal ranges of use for other factors
Factor Nominal Range
Direction of beam incidence Within a cone with a half angle of 5 ° to the preferred direction
Ambient temperature 15 ° C to 35 ° C
Ambient pressure 800 hPa to 1060 hPa
Relative humidity 20 % to 75 %, <20 g/m