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Torque is either static or dynamic. Static torque, the kind where the shaft doesn't rotate, is measured with a reaction torque transducer. It gets its name from Newton's third law — for every action, there is an equal and opposite reaction. S. Himmelstein and Company builds accurate and durable reaction torque measurement devices. In many applications, the solid flange reaction torque transducer is the one to use.

Torque Measurement Basics 

As with all of our torque transducers, the solid flange reaction torque transducer measures torsion with strain gauges. Strain gauges are produced from copper-nickel or nickel-chromium wire, chosen because resistivity changes with extension and compression.

To measure torque with our solid flange reaction torque sensor, several strain gauges are bonded onto or incorporated in a shaft, at 45 degrees to the main axis. When configured in a Wheatstone bridge arrangement, shaft twist creates extension and compression, yielding small but measurable electrical signals. 

Since resistivity changes with temperature, long-term torque measurement requires temperature compensation. This is achieved through sophisticated signal conditioning equipment that provides excitation and output signal amplification and filtering. With this technology, our solid flange reaction torque meter can provide the most accurate readings in the market.

Strengths of the Solid Flange Reaction Torque Sensor 

  • Straightforward installation, in less axial length than needed for a rotary torque sensor
  • Simple mounting — no keyed shafts or couplings
  • Durable — little-to-no maintenance required
  • No bearings or speed limits 

Applications for the Solid Flange Reaction Torquemeter 

Calibration, testing, and process and equipment monitoring are common torque measurement applications. For example, in industries from automotive assembly to mining and energy, production fasteners must be installed to determined torque levels. For consistency, the fastening equipment is therefore calibrated and tested with high-accuracy torque measurement equipment such as the solid flange reaction torquemeter.

In the process sector, torque indicates the progress of mixing operations, and can monitor extrusion, rolling and milling. Thus, accurate measurement can give more granular control that might otherwise be possible with time-based methods.

Torque is also a good indicator of machinery condition. A change in torque could signal problems with bearings, motors, pumps or gearboxes. Continuous measurement with high-precision reaction torquemeters safeguards high-value equipment against premature failure and prevents unplanned downtime.

Solid Flange Reaction Torque Transducer Options 

Reaction torque transducers are available with various outputs and levels of precision. In addition to +/-2 mV/V and +/-10 mV/V analog output models, there are versions with simultaneous +/- 10mV/V and digital (RS232) output. 

Standard precision (Code N) transducers have a combined error of +/- 0.1% of range. In High Precision (Code C) models, this value is +/- 0.05%. In addition, the Precision Torque Transfer Standard offers a special Code J model with error of less than +/- 0.01%.

Experienced and Professional 

At S. Himmelstein and Company, we’ve been measuring torque since 1960. We're known for high-quality torque measurement transducers that are easy to install and yield accurate data. Our after-sales service and support are second-to-none and our skilled employees take pride in building the best products available at their price point. Contact us today to learn more.