FUTEK TRS-Series - Manual (Page 16)

16 EM1005
5.2. Torque Measuring Shaft (Model TRS600/605/705)
The signal lead should not exceed a length of 100 ft. Do not run the lead parallel to power cables or
shunt cal. circuits. The pin connection is explained in chapter 4.2 of this manual.
On each side of the torque measuring shaft there is a high quality bearing installed, and it contains an
integrated housing base. The installation can have any position, however offset couplings must always be
applied to balance geometrical false adjustments and like that keep false loads away from the torque
measuring shaft.
Radial, Axial, Diagonal and Angular errors can be compensated by the use of:
Multi-disk Couplings
Diaphragm Coupling
Claw Couplings
5.3. Possible Installation of Model TRS600/605/705
Fig. 13: Application example TRS705
Installation and operational Tips:
The Keys on the shaft are removable, may require to be removed before installing the couplings.
The sensor is only part of the complete drive shaft and depending on the speed the alignment
must be made in a proper way. Each type of coupling can compensate certain misalignment (of
radial, axial and angular character). Customer is responsible for damage to the shaft due to
misalignment and overloading on the shaft.
Radial and torsional vibrations can severely impact the performance of the torque sensor. For
this reason speeds at or near the torque sensor’s natural frequency should be avoided.
For coupling recommendation, see link on website under support/futek manuals/
TRD/TRH/TRS-Series.
Specimen with
fixed bearing Full Coupling Full Coupling
Specimen
Retaining Angle
Drive brake with
fixed bearing
Firm stator
Full coupling on both sides
Fixed bearing on both sides