Loma IQ3, User Manual, Page: 24 / 144

About Metal Detection
Test Wands
Loma Systems metal detectors are supplied with a set of plastic test
‘wands’ which contain spherical pieces of various metals in different
sizes. These are convenient and easy to place into your test samples
and also make the testing process even more efficient.
Generally the types of metal and sizes provided will include those
covering the specific detection requirements for the customer.
Loma Systems offer a wide variety of spare test wands. To purchase
additional test wands please email
teststicks@loma.com .
Testing Guidelines
You may be working to specific Customer Codes or Practice to test detector performance, but some
general guidelines for testing product samples are listed below.
■
Sample products should be tested with both ferrous and non-ferrous test wands.
■
When testing finished packed products on a conveyor system, place the test wand, where
possible, at the extreme end of the pack. If this is impractical, for example if you are testing
individual small packs or sandwich wedges, place the test wand in the centre of the product.
■
Test samples should be passed through the search head two times, first, with the test wand at
the leading edge of the pack and then with the test wand at the trailing edge of the pack.
■
When using a reject device, ensure that test samples which have a test wand attached
successfully enter the reject bin or that the conveyor stops when using ‘Stop on Detect’.
■
Wherever possible, fit metal detection equipment on your production line AFTER products
have been wrapped. Where this is not possible and you are manufacturing private label
goods, it is advisable to agree to the testing routine, in writing, with the retailer concerned.
■
Should any part of your test fail, isolate all products produced since the last satisfactory test
and re-screen them, using another detector functioning to the same standard as the original
system performing the test.
Test Records
When testing is carried out using the in built Performance Validation System (PVS), the results are
recorded automatically by the system.
If a serial link has been set up to connect to a printer or networked PC, a PV Test Report is
automatically generated and sent directly to the printer or after a PV test has been completed.
The PV test details are also available by navigating to the Menus > Logs menu, selecting PVS and
navigating to and selecting the View PVS Log ? menu option.
When testing is carried out manually, the results must be manually recorded and should include the
following:
■
Line or detector identification.
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Date and time of the test.
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Details of the sample(s) used.
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Identification of the operator/tester.
■
Results of the test (pass / fail).
■
Corrective action taken if the result was failure.
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