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8.1 Measuring dynamic torque
The torque flanges can be used to measure static and dynamic torques. The
following applies to the measurement of dynamic torque:
• The T10FM calibration made for static measurements is also valid for dy-
namic torque measurements.
• The natural frequency f
the moments of inertia J
T10FM's torsional stiffness.
Use the equation below to determine the natural frequency f
cal measuring system:
+ 1
f
·
c
0
T
2p
• Depending on the measuring range, the vibration bandwidth is 25, 45 and
80 kN⋅m (see Specifications, Page 46), even at alternating load. The vibra-
tion bandwidth must fall within the loading range defined by the upper and
lower maximum torque . The same also applies to transient resonance
points.
Upper maximum
torque
Lower maximum
torque
Fig. 8.1: Permissible dynamic loading
HBM
SUNSTAR自动化 http://www.sensor-ic.com/ TEL: 0755-83376489 FAX:0755-83376182 E-MAIL:szss20@163.com
for the mechanical measuring system depends on
0
and J
of the connected rotating masses and the
1
2
· 1
) 1
J
J
1
2
0
f
= Natural frequency in Hz
0
J
J
= Mass moment of inertia in kg⋅m
1,
2
c
= Torsional stiffness in N⋅m/rad
T
T10FM
for the mechani-
0
2
Vibration
bandwidth
B 23.T10FM.10 en
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