Ceia THS/MS21 - Metal Structures in Proximity to the Probe

FI002K0018v1100UK – THS/21 Instruction manual for installation, use and maintenance
3
INSTALLATION
ORIGINAL INSTRUCTIONS 49
3.1.2.2 Metal structures in proximity to the probe
3.1.2.2.1 Fixed metal structures
All the fixed metal structures in proximity to the detector must be
securely fastened down with bolts and self-blocking nuts. If
they form intermittent coils (caused by discontinuous metal
contact), they must be welded.
Intermittent coils can cause interference for the Metal Detector.
This interference is caused by the stray currents induced by the
electromagnetic field of the Metal Detector on the coils. This can
cause false alarms on the detector.
Installation of structures or
equipment with metal
(ferromagnetic for the
THS/MN21) frames in the
proximity of the Metal Detector is
not recommended.
THS/21x probe
s
(
rectangular tunnel
)
THS/G21x probes
(circular tunnel )
THS/21x
THS/G21x
THS/MN21
D

DH

0.5 DH

3 DH Static metal masses
3.1.2.2.2 Moving metal structures
Such structures must be located as far away as possible from the probe.
THS/21x THS/G21x THS/MN21
D

2 DH

1.5 DH

10 DH *
Small moving metal masses (i.e. piston rod)

4 DH Bigger moving metal masses
* Magnetic metal masses