Structure And Mode Of Operation - HBM T40FM Mounting Instructions

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Structure and mode of operation

The torque flange consists of two separate parts: the rotor and the stator. The
rotor comprises the measuring body and the signal transmission elements.
Strain gauges (SGs) are installed on the measuring body. The rotor electron-
ics for transmitting the bridge excitation voltage and the measurement signal
are located centrally in the flange. The transmitter coils for contactless trans-
mission 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 con-
tains the electronics for voltage adaptation and the signal conditioning.
Connector plugs for the torque and speed signals, the voltage supply and
digital output, are located on the stator. The antenna segments (ring) should
be mounted more or less concentrically around the rotor (see chapter 4).
Connector plug
Fig 3.1: Mechanical construction without a rotational speed measuring system
The speed sensor is mounted on the stator in Option 6 with a rotational speed
measuring system. The customer mounts the speed disc between the meas-
uring body and customer flange. The speed is measured magnetically with an
AMR sensor and magnetic tape.
HBM
Antenna segments
Rotor
Type plate
T40FM
Connector plug
Stator housing
A3276-3.0 en/de