Calibration Guidelines; Isotope Check Source (Sections 1 - 2) - CareWise C-Trak Apollo User Manual

C-Trak Apollo
Low battery indication and charging:
For Low Battery indications, see Appendix C.

3.0 Calibration Guidelines

3.1 Isotope Check Source
The Apollo System is designed to warn the user when the check
source is getting low. The date stamped on the Check Source
disc is its "birth date" at which time the radioactivity was at the
strength listed on the disc. For information on obtaining a check
source contact Care Wise or your representative.
Check Source for C-Trak
and OmniProbe EL
®
A 5 µCi Cobalt 57 (Co-57) check source should be used to
calibrate the system if an OmniProbe
10 µCi Cobalt 57 check source for the OmniProbe
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OmniProbe
® ®
is in use or a
®
EL.
®
Figure 29 – Main Counts Screen showing Apollo handset
has become active again after a Sleep period
Figure 30 – Main Counts screen showing indication for
running a System Test if a new OmniProbe or Apollo handset
is selected and has never had a System Test before
The characteristics of Cobalt 57 are:
• Primary photo peak energy: 122 keV
• Half life (time it takes for activity to decay
by one-half): 271 days (9 months).
The Co-57 check source should be replaced every 18 months.