Futek TRS-Series Manuel d'utilisateur télécharger pdf (Page 17)

17 EM1005

6. Maintenance



TRD/TRH/TRS Series sensors are almost

maintenance-

free where the bearing needs to be

replaced by factory after its life time.



Durability of bearings in compensated temperature range is approx. 20,000 hours.



Durability of bearings in operating temperature range is approx. 10,000 hours.



For Precision applications: Calibration of the sensor should be done at FUTEK or with adequate

calibration equipment.



Calibration: Yearly calibration is recommended but it depends on the criticality of the application &

requirement and may require smaller calibration intervals.



Inspect torque sensor cable and mating connector for damage on a monthly basis.

7. Repairs

Shaft stiff to turn

Bearing failure due to:

a) Torsional or flexural

vibration

b) High axial or radial loads

c) Worn bearings

d) Bent shaft

Return to factory

Fault

Possible Causes

Solution

Zero shift less than 2%

Torsional vibration

Torsional Shock

The zero reading may be

re-adjusted at display

Zero shift between approx.

2 and 5% of full scale

Zero shift more than 5%

Torque sensor has been

overloaded

Torsional vibration

Torsional shock

Torque sensor overloaded by

high alternating loads or

torsional vibration

The zero reading may be

re-adjusted at the

display

Return to factory

Torque sensor overloaded by

high alternating loads or

torsional vibration

Hysteresis between

clockwise and counter-

clockwise torque

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Futek TRS-Series Manuel d'utilisateur Page 17

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