848-8 Series Field Test Sources

The 848-8 Series of field test sources are portable, self-contained fixtures for on-site testing of area monitors. A sealed radiation source, combined with repeatable location of source and detector in the fixture, assures the consistency of the results. The source is encapsulated in welded stainless steel and secured inside a rotating section of the source shield. By rotating the section, one can bring the source to a position where radiation from the source passes through an exit hole in the shield to irradiate the detector. The rotating section is spring loaded to return to the closed position, and the mechanical interlocks prevent removal of the detector until the rotating section is in the closed position. These safeguards help to minimize the operatorâ€™s exposure to radiation.

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Product Details

848-8 Test Sources

Overview

Key Features

Field calibration check device
For use with the 945A and the 955A area monitor channels and other area detectors
Shield spring-loaded closed by redundant helical springs
Interlock prevents locking shield open
Interlock prevents the removal of the detector with the field test source in the open position |
Shielding lead encased in steel and brass
Radioactive source mounted in steel
Shield locked in closed position by key lock
Key assembly locks detector in place until the shield is closed and locked

Introduction

The Model 848-8 Series of field test sources are portable, self-contained fixtures for on-site testing of area monitors. A sealed radiation source, combined with repeatable location of source and detector in the fixture, assures the consistency of the results. The source is encapsulated in welded stainless steel and secured inside a rotating section of the source shield. By rotating the section, the operator can bring the source to a position where radiation from the source passes through an exit hole in the shield to irradiate the detector. The rotating section is spring loaded to return to the closed position, and the mechanical interlocks prevent removal of the detector until the rotating section is in the closed position. These safeguards help to minimize the operator’s exposure to radiation.

Field calibration check device
For use with Model 945A and Model 955A area monitor channels and other area detectors
Shield is spring-loaded, closed by redundant helical springs
Interlock prevents locking shield open
Interlock prevents the removal of the detector with the field test source in the open position

Applications

The Model 848-8 Series of field test sources are designed to be used as field checks of detector functionality. They can be used with the following detector models:

Model 977 Series Wide Range Ion Chamber Detectors
Model 857A Series GM Detectors (requires Model 848-8-105 adapter) For stainless steel versions, use Model 848-8-400 adapter
Model 897A Series GM Detectors (requires Model 848-8-105 adapter) For stainless steel versions, use Model 848-8-400 adapter
Model 828 Gamma Guard (requires Model 848-8-808 adapter)

Models

Model Name	Part Number	Description
848-8		Field Test Source 100 mCi
848-8A		Field Test Source 10 mCi
848-8B		Field Test Source 20 mCi
848-8D		Field Test Source 1 mCi

Vertical Tabs

848-8

848-8A

848-8B

848-8D

848-8 Series Field Test Sources

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Product Details

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