SGSM
7 - Maintenance
The magnetic measurement system does not need
any particular maintenance; please always consider
it is a delicate electronic equipment and therefore it
must be handled with care. From time to time we
recommend the following operations:
•
Check the mounting tolerances between the
sensor and the magnetic ring are always met
along the whole measuring length. Mechanical
plays could compromise the proper counting;
•
the surface of the magnetic ring should be
cleaned periodically using a soft cloth to remove
dust, chips, moisture etc.
8 - Troubleshooting
The following list shows some typical errors that
could occur during installation and operation of the
magnetic measurement system.
Fault:
The system does not work (no pulse output).
Possible cause:
•
The ring or the sensor has been mounted
incorrectly.
•
A magnetic part has been inserted between the
sensor and the substrate. Only non-magnetic
materials are allowed between the sensor and
substrate.
•
The sensor touches the substrate because the
tolerance gap between the sensor and the
substrate is not met. Check the sensor active
side if damaged.
•
The sensor has been damaged by short circuit,
inversion of polarity or wrong connection.
Fault:
The measured values are inaccurate.
Possible cause:
•
The mounting tolerances are not thoroughly
met.
•
The connection cable runs near to high voltage
cable or shield is not connected properly. See
the section “5 - Electrical connections“.
•
The max. counting frequency of the receiving
device is too low.
•
A section of the magnetic substrate has been
damaged either mechanically or magnetically.
•
The measuring error is caused by torsion of the
machine structure. Check parallelism and
symmetry of machine movement.
MAN SGSM I_E 1.5.odt
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