How do you address unknown issues
such as "start-up torque" and
"unknown torque transient spikes.“?
Is a safety factor sufficient to address
When designing a rotary torque
transducer into an application, do
you think the pedestal-mount or the
general purpose rotary torque
transducer is the best approach?
I usually recommend shrink disk
couplings over keyed couplings.
Is this the right thing to do?
What is the best way to measure
shear (lateral) forces applied
to a flat plate that is used to
measure vertical force
How can you tell the direction of
rotation from the output voltage?
How would you go about minimizing
slippage at the mounting locations
for torque cells that measure
in both directions?
Are there sensors available
that can measure both
applied load and
Big Torque Measurements:
What do I need to know about
high capacity torque
What will be the uncertainty
budgets for the torque transducer
If the torque spec is
90 N.m +60 – 75 degrees,
what fastening application
would be best?
Torque and Angle
Angle and Torque
Why does the metrology community,
specific to torque measurement,
not properly estimate the associated
uncertainty with the measurement
What adaptors do you use
to hold the torque wheel to the
On some transducers the centering square pocket that accepts
the adaptor are not perfectly square leaving side to side
movement of the adaptor and torque wheel. This does seem to
make a big difference on torque below 250“ lbs.
The square pockets are not always square or the same size.
What can I do to reduce my
uncertainty and how do you correct
Do you add repeatability of a torque
wrench to your MUA budget?
If so, how many measurements are made? Do you do
repeatability at each calibration point? If repeatability is made
would you repeat the test point multiple times and move on to
the next test point or go through all test point and then repeat?
Do you add resolution of the torque wrench to your MUA budget?
If so, what resolution do you use for a non reading, settable type
torque wrench? If the resolution and repeatability are included in
the MUA budget, how is an adequate TUR ie 4:1 maintained
when conformance testing? Do you take multiple readings and
verify all readings are within specs? How often do you calibrate
the Moment arm that is used to calibrate torque cells?
What are the largest contributors in an
uncertainty for a torque calibration?
Aside from a more compact
format is there any reason to use
a torque transducer over a
load-cell at a known offset?
Measurement of torque
on a 8" driveshaft is needed. High resolution (to accurately
measure torque under no-load conditions) to a maximum
of 24000 ft.lbs (4000 ft-lbs engine torque reduced 6:1) is
needed. The sensor is also for field use (no slip rings and
IP67 sealing) and re-usable.
Do you have any suitable torque
sensors for this application?
We are looking for a facility to
perform torque measurement on
fastener over 1" diameter.
Coefficient of friction using
Ni-ease vs. Copaslip vs Loctite.
Can you advise?
Is there any protection in case
the test torque goes over the
What is the difference
between a rotary
and reaction torque sensor?
How do you ensure that the torque
sensor is installed on-center?