Structure And Mode Of Operation - HBM T10FS Operating Manual

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Structure and mode of operation

Torque flanges consist of two separate parts: the rotor and the stator. The
rotor comprises the measuring body and the signal transmission elements.
Strain gauges (SGs) are mounted on the measuring body. The rotor
electronics for transmitting the bridge excitation voltage and the measurement
signal are located centrally in the flange. The transmitter coils for contactless
transmission of excitation voltage and measurement signal are located on the
measuring body's outer circumference. The signals are sent and received by
a separable antenna ring. The antenna ring is mounted on a housing that
includes the electronic system for voltage adaptation and signal conditioning.
Connectors for the torque signal, the voltage supply and the speed signal
(option) are located on the stator. The antenna ring should be mounted more
or less concentrically around the rotor (see Chapter 4).
A magnetic or optical sensor performs the speed measurement. With a
magnetic measuring system, a magnetized rotor is sampled by means of a
MagnetoResistive sensor (MR).
The optical sensor works on the infrared transmitted light barrier principle. The
reference pulse is generated by a magnet in the slotted disc and a
magnetoresistive sensor. In the case of option 2 (speed measuring system),
code L, the speed sensor is mounted on the stator, the customer attaches the
associated slotted disc on the rotor. In the case of code H, the slotted disc is
already mounted on the rotor.
Stator
Housing
Fig. 3.1: Mechanical structure, exploded view
HBM
Optical speed sensor (option)
Fan‐type lock
washers
Antenna segments
(without slotted disc)
T10FS
Rotor
A0785-1.4 en