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This torque sensor is designed for both static and
dynamic measurements on non-rotating parts. It is
particularly suitable for torque measurements on, for
instance, extremely small electrical actuating drives
and micromechanical actuator elements, but also for
large reaction torques such as those occurring with
extruders. The high accuracy of measurement also makes
this sensor ideal for use as a reference in many fields
of industrial manufacture, or in laboratory research and
development projects. Not containing any rotating parts,
it requires no maintenance if properly used.
Other possible applications:
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Test setups for precision
mechanics |
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Measuring the frictional
torque of bearings |
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Measuring the torques
applied to vehicle control elements |
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Measuring the opening torque
on screw caps |
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| Description |
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The
length, weight and volume of the unit have been
optimized in such a way that axial forces and bending
moments in the measuring range have a minimal effect
on the sensor element. Shear strains in the torsion
shaft are measured accurately by means of metal foil
strain gages
connected as a Wheatstone Bridge on the sensor
element.
Applying a supply voltage generates an electrical
output signal that is directly proportional to the
applied mechanical torque. The standardization of the
sensor output signals means that it is easy to
exchange the sensor without having to recalibrate the
measuring chain. By means of an amplifier the sensor
output signal can be converted, for instance, to a
standard signal (0..10V, 0/4..20 mA) or can be sent
directly to a PC through a USB interface. Accurate
display and evaluation units complement the range of
possible applications. The sensors, particularly those
with small measuring ranges, must be mounted
carefully. It is important that the drive and
measuring ends are not reversed during assembly.
The measuring shaft should always be cleaned prior to
assembly, to ensure that no foreign objects are
sticking to it. It is recommended that the sensor is
electrically connected and that the output signal is
observed at the time of fitting. Vibrations
originating in the equipment should be kept away from
the sensor. The sensor should only be mounted on the
coupling after the parts have been accurately aligned.
This should be done without free play or lateral
forces.
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