FI002K0018v1530hUK – THS/21 Instruction manual for installation, use and maintenance
3
INSTALLATION
ORIGINAL
INSTRUCTION
57
3.1.2.4 Conveyor belt and position inside the Probe
3.1.2.4.1 Conveyor belt mat
For the product transport inside the Probe, use belts NOT containing metallic nets
or filaments (i.e. antistatic belts) and, for flat belts, it is recommended to use the
ones with finger joint (hot).
It is recommended to adopt adequate countermeasures to avoid metallic contaminations or residues of the conveyed
product to accumulate on the belt, because they can negatively affect the Metal Detector optimal performances.
However provide adequate systems to allow easy disassembly of the belt for its replacement or periodic cleaning.
DO NOT use antistatic belts.
3.1.2.4.2 Sliding
plane
It is recommended to use plans or supports in insultaing material, to sustain the belt, with a proper
thickness for the transported weight (indicatively between 5 and 20 mm).
This supports shall be fixed by means of screws positioned
outside the minimum respect area for fixed metal structures
and they shall be installed so as to avoid any contact of the
belt with the inner part of the transit tunnel.
With flat belt, consider the transit of the belt through the
Probe in both directions, to avoid its cut in case it has to be
disassembled during cleaning or periodical maintenance
operations; Consider also proper systems to ease its
disassembly.
Belt and insulating sheet must not touch the Probe (the
figure shows a gap of 10 mm) in order to avoid vibrations
to the Probe or damages to it, and to prevent eventual belt
small contaminations (during the operative cycle) to already
interfere with the device correct functioning.
In any case, if there is a supporting metal layer for the belt,
when it arrives at the Probe, it must be interrupted for a
distance D, on both sides of the Probe.
All models
THS/MN21
D
2 DH
4 DH
Position of the conveyor belt inside the Probe
PI
: sheet of insulating material;
PM
: layer of metal material;
N
: belt
With products in metallic packaging, or with physical characteristics of high electric conductivity, or with magnetic
properties, it is recommended to position the sliding plane so as the product will be as centered as possible in the Probe
aperture.
In some systems, the belt can accumulate electrostatic charges during its movement, thus generating noises to the Metal
Detector correct functioning; it is recommended to adopt adequate countermeasures to ensure the ground discharge.
In case conductive parts are used, in contact with the belt, to perform it, check that these are of a material suitable for not
contaminating the belt and connect them to the ground through a connection to only one side of the bearing structure.
