Device for use in normalizing readings on a testing machine

Details Device for use in normalizing readings on a testing machine Device for use in normalizing readings on a testing machine

2006-12-12

2010-12-28

Porta, David P (Department: 2884)

Radiant energy

Calibration or standardization methods

C250S36100C, C250S362000

Reexamination Certificate

active

07858924

ABSTRACT:
An optic module verification device for normalizing between X photon counters, including a verification tray with X verification wells and a modular photon emitter in each verification well. Each photon emitter includes a spring, a Beta source disk, a scintillator disk adjacent the Beta source disk, and a neutral density filter over the scintillator disk, all of which are encapsulated in a cylindrical chamber with the filter adjacent an opening on one end of the chamber and the spring biasing the Beta source disk and the scintillator disk toward the opening. The device is periodically used for normalization, and may be updated when emitted photons fall below a desired level by replacing the scintillator disk and then determining a new normalized reference values for each photon emitter.

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