Appendix B Counting Samples
B. Counting Samples
The primary function of the
i
Matic is to count user samples and provide accurate alpha
and beta results that are Radon and Thoron corrected. In order to count samples
accurately and correctly the system must be properly calibrated and procedures must
be created that provide the sensitivity requirements of the sample to be analyzed.
Please refer to the
Define Procedures
on page 20 and
Define Calibrations
on page 55
for detailed information.
The
i
Matic uses the sample changer mechanism to automatically count a group of
samples according to the procedure defined for them. When the system is calibrated
and a procedure has been created, samples may be counted by following these steps:
1.
Place each sample in a planchet/insert/carrier.
2.
Select the group plate that corresponds to the procedure you choose to use for
this batch of samples.
3.
Place a “SAFETY” in the left stack on top of any other plates including the
“END” plate.
4.
Place the group plate to the right of the two blank plates in the right stack of the
sample changer.
5.
Place the stack of samples on top of the group plate.
6.
Place an “END” plate on top of the samples in the right stack.
7.
Place a “SAFETY” plate on top of the “END” plate in the right stack.
8.
Press
COUNT
on the front panel.
The
i
Matic will begin feeding the sample carriers through the changer. When it
recognizes the group plate, it will insert the following samples into the system to be
counted. This process will continue until the “END” plate is recognized.
Multiple groups of samples may be counted automatically. Each time the system
recognizes a new group plate on the stack, all following samples will be counted
according to the procedure and calibration corresponding to the group plate until the
“END” plate is recognized.
90
iMatic Automatic Counting System User's Manual - 9239221K
