7 linearity corrections – Fluke Biomedical 35080M User Manual

Page 17

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35080M
Operators Manual

2-6

2.7 Linearity Corrections

Corrections for linearity in using the Wide Range Filter Pack (37617) are made by taking the apparent
output of the Model 35080M and adding (or subtracting) the value in kV shown on the following curve.
For the greatest accuracy possible, readings should first be corrected for filtration before linearity
corrections are made. For most applications, however, linearity corrections alone may be adequate,
especially if the difference in total filtration from the calibration standard of 2.5 mm Al is small. See
Section 2.6 for information about filtration correction.

Figure2-5. The Wide Range Filter Pack (37617) Linearity Correction Curve. The kVp Correction Value

read from the vertical scale should be added to the Model 35080M kVp Divider reading to
produce the corrected kVp result.

Wide Range Filter Pack (37617)

Linearity Correction Curve

kVp Correction

Model 35080M Reading kVp

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