Fluke Biomedical 190N - Manual (Page 12)

Victoreen 190N
Operators Manual
2-2
2.3 Calibration
The 190N is calibrated against a Tissue Equivalent Proportional Counter using Radium / Beryllium
neutrons at a distance of 100 cm.
The lower discriminator threshold is set at about 1 MeV.
The calibration provides the factor in converting from counts ( CPM ) to Dose Equivalent (mRem/hr). A
quality factor of 8 is assumed for this calculation A Model 190-1A communicator, a personal computer,
and the appropriate software, would give the user the ability to re-calibrate the Model 190, including
entering a new Quality Factor.