Glossary
236
L
Learn: The process of passing sample products through the metal detector so that
it can automatically select the optimum detector settings based on the
product effect.
M
Metal Free Zone: An area external to the metal detector aperture which must be free of any
fixed or moving metal as it generates a signal that will be picked up by the
metal detector
N
Noise: Electrical signals generated by local sources such as un-suppressed
solenoids and inverters, which can cause False Triggering or reduce
detection performance.
Non-Ferrous: A metal, including alloys, that does not contain any iron in appreciable
amounts, is highly conductive and non-magnetic.
P
PEC: Photo-Electric Cell - Generates a beam of light which when broken by the
passing of a product triggers an action through the software such as
activating a reject device or updating a product count value.
Performance Validation: Regular testing of the detector performance to validate that it is operating
correctly and detecting metal contaminants of the required type and size
Product Effect: Signals produced by the product when it is passed through an
electromagnetic field that can be seen by the metal detector.
R
Reject: A product containing a detected metal contaminant that has been removed
from the production line by the metal detector.
S
Serial Link: A network connection which allows the metal detector to communicate with
another device connected to the network.
Shaft Encoder: A device fitted to variable speed conveyors to enhance accuracy of the
reject timing.
Stainless Steel: An iron alloy which contains a minimum of 10.5% chromium and is corrosion
and rust resistant.
T
Test Wand: Item that contains a spherical metal contaminant, of a specific type and size,
that is attached to a product to assist in
Threshold: Product signal limit, set as either a minimum or maximum value, which can
be used to identify products for rejection.
Tracker: A feature which automatically adjusts the working frequency used to inspect
the current product based on a calculated average product signal.
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