HBM T20WN, Инструкция по монтажу, Страница: 15 / 88

Load‐carrying capacity
T20WN A0726-14.0 13
5 Load‐carrying capacity
The torque transducer T20WN is suitable for measuring
static and dynamic torque.
Nominal torque can be exceeded statically up to the limit
torque. If nominal torque is exceeded, additional irregular
loading is not permissible. This includes longitudinal
forces, lateral forces and bending moments. Limit values
can be found in
chapter 9 ”Specifications”, page 18 .
5.1 Measuring dynamic torque
The following applies to the measurement of dynamic
torque:
S
The calibration carried out for static torque also
applies for dynamic torque measurement.
Note
The frequency of the dynamic torque must be lower than
the natural frequency of the mechanical measuring sys­
tem.
S
The natural frequency f
0
of the mechanical measuring
system depends on the moments of inertia J
1
and J
2
of the coupled rotating masses and depends on the
torsional stiffness of the transducer.
The natural frequency f
0
of the mechanical measuring
system can be determined from the following equation.