Figure 7-6. Auditcheck Elements - Thermo Scientific Apex Service Manual

AuditCheck™
Figure 7–6. AuditCheck Elements
It should be also noted that the path of the test piece is precisely
controlled. Another benefit of the design is that it is a failsafe system.
If the air supply to the system is defective, the test piece will not travel
through the tube and the resultant head signal will not be measured.
The result will be an alarm condition. In fact, the microprocessor must
detect the precise calibration signal in order for the test to pass.
Figure 7–7 illustrates the graph of the counts representing the
amplitude of the signal on the receiving coils of the metal detector for
a given head size against relative contaminant size. The calibration
counts generated during a product set up is shown at A.
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AuditCheck™ Thermo Fisher Scientific
REC 4258 Rev C