Fluke Biomedical 35080B - Manual (Page 63)

Appendix
The Model 35050A Dosimeter Measurements
B
B-3
( )
offset Zero
offset Zero kVp CAL Actual
offset Zero kVp CAL Expected
offset Zero kVp Measured kVp Corrected +
−
−
− =
⎟
⎠
⎞
⎜
⎝
⎛
Example: For the Wide Range Filter Pack (37617) (50-150kVp), the Expected CAL kVp is given as 80,
and the Zero offset value is 40 kVp. However, a Model 35080B kVp Divider in CAL mode with this filter
pack inserted is connected to a Model 35050A Dosimeter, and a kVp of 81.2 is measured. When placed
in an x-ray beam in RUN mode, the Model 35050A Dosimeter reads 91.5 kVp. The Corrected kVp for this
exposure is calculated from the previous equation.
( )
kVp 90 = kVp 40
kVp 40 - kVp 81.2
kVp 40 - kVp 80
kVp 40 - kVp 91.5 = kVp Corrected
+ ⎟
⎠
⎞
⎜
⎝
⎛