Sentinel 989 - Radioactive Source Assembly; Figure 5 -Exposure Device with Pneumatic Actuator Attached and Actuator Assembly; Figure 6 - Exploded View of Model 98940 Source Assembly; Figure 7- Exploded View of Model 98941 Source Assembly

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Figure 5 -Exposure device with pneumatic actuator attached and actuator assembly
3) Radioactive Source Assembly
The Model 989 exposure device is used only in conjunction with QSA Global, Inc. Model 97941, Model 98940
or 98941 source assemblies. These source assemblies contain a QSA Global, Inc. X540/1
source capsule. The
Se-75 sealed source capsule and the source assemblies are specifically designed for use in the Model 989
exposure device and may only be reloaded by QSA Global, Inc., or one of the authorized service centers. Use of
an unapproved source assembly may cause elevated dose rates on the exposure device.
The Model 97941, Model 98940 and Model 98941 source assemblies are designed to be re-usable. After the
source assembly is re-loaded with a new sealed source within a shielded enclosure, the source assemblies are
joined and held together by the use of non-reusable, roll-pins through the union of the joined source assembly.
(See Figures 6 and 7).
Figure 6 – Exploded view of Model 98940 source
assembly
Figure 7- Exploded view of Model 98941 source
assembly