BELTS AND BELT SPLICES
The metal detector’s sensing head cannot be disassembled to be fitted around an endless
conveyor belt. The conveyor must be designed to return the belt through the aperture, or the
belt must be cut and spliced (non-metallic) back together. Splicing the belt with lacing or
clamps is not recommended since foreign materials tend to collect at the joint and may
eventually cause false detections.
A proven, trouble free choice for metal detector conveyor belts are modular plastic conveyor
belts. Eriez recommends and uses this option as they are easily maintained and faulty sections
can be changed out quickly. Conductive plastic components, belts, and metallic hinge pins or
rods must be avoided. Vulcanized belt splices are the most reliable and are recommended for
continuous belt applications where plastic chain cannot be used (Figure 9). If the belt is single-
ply, the finger splice configuration should be used. If the belt is multi-ply, a diagonal bevel or
step splice configuration is recommended.
Figure 9
Finger
Splice
Single-Ply
Step/Finger
Splice Two-
Ply
Diagonal Bevel
or Step Splice
Straight Bevel
or Step Splice
Not Recommended
Recommended
for All
Apertures
Not Preferred
for Apertures
under six
inches high
NOTE:
During all splicing it is absolutely necessary to ensure that no foreign material (especially metal)
is trapped within the splice. If metal is trapped in the splice, the detector will trip each time the
splice passes through the aperture. Since the metal is trapped inside the splice, it cannot
normally be located and removed without ruining the belt.
MECH
21
Summary of Contents for Xtreme
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Page 33: ...FIGURE 4 OUTPUT CONNECTION EXAMPLES ELEC 31 ...
Page 34: ...FIGURE 5 INPUT CONNECTION EXAMPLES ELEC 32 ...
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