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4
Load-carrying capacity
The T22 torque transducer 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 the "Specifications" chapter, Page 15.
4.1 Measuring dynamic torque
The following applies to the measurement of dynamic torque:
• The calibration carried out for static torque also applies for dynamic torque
measurement.
The frequency of the dynamic torque must be lower than the natural
frequency of the mechanical measuring system.
• The natural frequency f
the moments of inertia J
torsional stiffness of the transducer.
The natural frequency f
determined from the following equation.
+ 1
f
·
0
2p
• The vibration bandwidth (peak-to-peak) must not exceed 80 % of the
nominal torque identified for the torque transducer, even at alternating load.
In all cases the vibration bandwidth must lie within the loading range defined
by −M
and +M
nom
HBM
NOTE
of the mechanical measuring system depends on
0
and J
of the coupled rotating masses and on the
1
2
of the mechanical measuring system can be
0
· 1
) 1
c
T
J
J
1
2
.
nom
f
= Natural frequency in Hz
0
J
, J
= Moment of inertia in kg⋅m
1
2
c
= Torsional stiffness in N⋅m/rad
T
T22
2
A2302-2.0 en/de
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