On request, service instructions for the assembly and disassembly of the
FDM-T sensor can be supplied for various treadmill types, so that mainten-
ance and repair work can be carried out by trained personnel on site.
To guarantee the correct functioning of the speedometer in the long term,
the central position of the belt must be checked monthly according to the instruc-
tions supplied by the treadmill manufacturer, and readjusted, if required.
The measuring system must be checked at regular intervals to ensure
its correct function and patient safety.
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FDM-T-Sports
6.3. Maintenance of the FDM-T sensor
6.3.1. Control procedures
In case the running belt has been exposed to hard knocks or heavy items have fallen onto it, the
surface of the FDM-T sensor has to be checked for damaging (cracks, dents, and scratches on the
surface). If visible damages are detected, no further measurements must be carried out.
After carrying out a zero measurement, no measuring values may be shown for a condition without
any load. In addition, the pressure distribution images are to be checked regularly for untypical
measuring patterns. These include above all, line or column-shaped measuring patterns deviating
from the surrounding values.
Whenever faults occur or in case of doubt, the manufacturer or sales partner authorized by zebris
must always be contacted.
6.3.2. Calibration procedures
The measuring accuracy of the FDM-T sensors is to be checked from time to time using a defined
application of pressure. To do so, the user can stand on the platform on one foot. Provided that he
knows his body-weight, the platform must then show the approximate bodyweight, taking the force
of gravity, the sensors at the edges that may not be under full pressure, and the measuring tolerance
into consideration.
In case the measuring results show deviations larger than > ± 5% of the full measuring range, a
recalibration by the technical service of zebris Medical is required. If any doubt exists about the
measuring accuracy of the FDM-T sensor, it is recommended to have the pressure distribution
measuring sensors checked and re-calibrated by zebris, to ensure the specified measuring accuracy.
