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What are the solutions to measure torque?

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Torque guage with wrench torque sensor StarIn the design and manufacturing industries, torque measurement is a big challenge and becomes a relevant measurement in order to define / validate:

  • mounting specifications / clamping
  • product characteristics such as motors, generators, wind turbines ...
  • the accuracy of tools such as wrenches or screwdrivers

Measuring torque can therefore quantify the mechanical rotating action on a physical property, expressed in Nm, lb.in or even g.cm. This measure can be done in both clockwise and counterclockwise directions.
Here are some typical applications requiring torque measurements which are usually performed using a Torque Gauge:

  • measuring torque of a screw connection (friction, break ...)
  • measuring the torque of unscrewing a bottle cap (water, perfume), circlip ...
  • measure the starting torque of an electric drill
  • measurement of torque on a motor shaft
  • measuring the transmission torque on a pulley
  • measuring the torque and rotational angle of a mixer

Torque measurement can be done in two ways: with a static torque sensor for measurements requiring less than one revolution, or a rotary torque sensor when you want to measure rotary drive systems.

What is a static torque sensor?
A static torque sensor consists of static / non-moving components and mate with your system to measure the rotating torque.
Static torque sensors are easily adaptable to various applications thanks to the wide selection they offer in terms of size, shape and capacity. We offer a wide torque measurement range from 0.12Nm to 1000Nm. These readily applications such as:

Measuring assembly connections                       Measuring the torque required to unscrew bottle caps
Force gauge with handle torque sensor Star                Bottle tester with safety cap

 

What are the important things to remember before using a static torque sensor?
Most static sensors are not designed to absorb axial forces, so it is highly recommended to control how your sensor will fit when designing your measurement system setup. Also, in order to guarantee accurate and repeatable torque measurements, it is important to ensure that the rotational force is applied perpendicularly.

What is a rotary torque sensor?

Couplemètre manuelUnlike the static sensor, the rotary torque sensor consists of driven, rotating elements (usually a shaft) and therefore is ideal for systems designed for continuous rotation. The setup must be associated with a braking system.
 They fit perfectly in applications such as measuring the starting torque on an electric screwdriver or measuring the torque on motor shafts. Our range of rotary torque sensors meets all of these applications. They can be linked to your production equipment through USB, RS232 or TTL outputs.

What are the important things to remember before using a rotary torque sensor?
Make sure the drive speed per minute of your rotating element (RPM) is compatible with the sensor specifications. Also, the static sensor alignment of your entire system must be perfect in order to ensure precise accuracy in your measurement. Thus, the use of couplings is highly recommended to compensate for any potential axial, radial, or angular misalignment in between your rotational axes.



Example of rotary torque sensor mounting::


Couplings ::  used to connect the components together but also to reduce errors due to misalignment between the motor and the sensor, or the sensor and the brake.
Power brake :allows you to vary the load applied to the motor, and hence the resultant torque.
The Centor Touch display :gives real-time value of the torque versus time or angle if necessary.
 

If we require more data?

TorkHeadDriverThe rotary torque sensor may be associated with a rotary encoder, and thus measure the torque and the rotational angle. Torque and angle data are then collected and displayed simultaneously on the two channel torque gauge. Applications that typically require this type of torque measurement are systems such as mixers or endless rotary knobs. To meet these needs of collecting two channels of data at once, ANDILOG offers the Centor Touch Dual

And finally, , some applications require a defined and constant speed. To meet this need we developed the motorized rotary torque meter, called the TorkHeadDriver, which measures torque and angle at a controlled speed. This provides repeatable results that are not dependent on the velocity variations in your measurements

Vidéo du TorkHeaDriver Examples of applications:

  • Screwing / Unscrewing of nuts and screws
  • Measuring components such as encoders, switches ...etc
  • on mechanical components in dashboards of cars / airplanes

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Article Related Products

Force gauge with handle torque sensor Star

Centor Touch Star TH, advanced torque tester, handle sensor

Series code: CNR CT TH
Availability: Usually ships in 2-3 weeks
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  • Accuracy 0.5% Full scale
  • Calibration certificate included
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Drive Rotary torque gauge Centor Touch Dual with encoder

Drive Rotary torque gauge CENTOR TOUCH DUAL with encoder

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Gyrotork TW Torque and angle gauge

Gyrotork TW - Torque and angle gauge

Series code: GYROTORK TW
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Torque guage with reaction otrque sensor Star

Centor Star TT, static flange torque tester reaction sensor

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Bottle tester with safety cap

Anditork DUAL, for child-resistant caps

Series code: ANDITORK DT
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Andilog

ANDILOG TECHNOLOGIES is a recognized specialist for over 25 years in measuring instruments for force and torque applications in the industrial and research markets. We achieved this goal thanks to a culture of innovation and a strict quality policy. For each measurement case of force or torque, Andilog is creating an innovative and ergonomic solution. We offer measuring devices such as test benches, software, force and torque gauges, digital displays, manual and motorized test stands. We also have every possibility of calibration in force and torque in our laboratory. Our experience as a designer, a manufacturer and an integrator of portable force measuring systems allows us to offer integrated products into complete systems for assembly or manufacturing. All these products feature the latest technologies and are designed for ease of use by industry technicians, laboratory or research.

Andilog Technologies ISO 9001:2015 Certified Certificate #A529
ISO 9001:2015 Certified
Certificate #A529

ANDILOG TECHNOLOGIES, for force gauge, torque gauge and test stand A complete range of force measuring instruments

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