Torque Metering System

Torque Metering System

Torque Metering Systems

Riverhawk, the leading innovator and developer of the on-shaft Torque Metering System, has a leading edge digital design using Hall-Effect sensor technology and strain gauge bridges for unparalleled reliability in harsh environments. We are the world’s only supplier of strain gauge based torque measurement systems for high performance couplings. Strain gauges are a proven technology and provide the most accurate way of measuring torque. They are the only way to obtain an instantaneous torque value.

Riverhawk Torque Metering System Overview

  • Works with most available couplings on the market with minor modifications, eliminating the need for coupling redesign
  • Reduced weight compared to other systems; minimal weight suspended by coupling due to strain gauge technology
  • Less sensitive to coupling guard deflections and there are no gear teeth to generate windage and heat inside the coupling guard
  • Superior with respect to the effects on balance and natural frequency compared to other torque metering technologies
  • Savings derived from increased machinery efficiency will generate a quick payback while providing insurance against failures in equipment being monitored



Riverhawk Torque Metering System Features

Using proven components and thermal calibration, the output is not affected by coupling temperature changes. Since the torque measurement and temperature compensation are done within a span of a few inches on the shaft, the accuracy is not affected by temperature differentials typically seen across couplings. Competitors may calibrate over temperature, but they cannot compensate for a temperature differential across the coupling. We can calibrate our couplings in a static test stand (not rotating), so we can very accurately measure the torque and verify repeatability. The combination of lower cost and better performance makes the Riverhawk Torque Meter Systems a wise choice.

Torque Meter Applications

  • Processing Compressors
  • Pipeline Compressors
  • Refrigeration Compressors
  • Feed Water Pumps
  • Test Stands
  • Ship Drives



Torque Meter Advantages

The advantage of the Riverhawk Torque Meter System, besides its high accuracy (within 1% full scale at temperatures below 250°F) and adaptability, is its suitability for high and low speeds. The use of the Heat Balance Test, normally used in defining power produced by the machinery with an accuracy of 5%, when used in conjunction with the Riverhawk Torque Meter System will allow the user to define the optimum operating range in machinery under any plant operating condition.

  • Works with most available couplings on the market with minor modifications, eliminating the need for coupling redesign
  • Less complicated coupling design
  • Temperature compensation of the unique “on-shaft” electronics reduces error in readings due to temperature variations and temperature gradients across the coupling; bonded strain gauge bridges provide reliable linear torque signals
  • The use of two rotary transformers, one supplying power to the electronics and the other transmitting the signals from the shaft precludes any need for bearings or slip rings to be used with the system
  • Savings derived from increased machinery efficiency may generate a quick payback while providing insurance against failures in equipment being monitored



Benefits of Riverhawk Torque Metering SystemsTorque Metering System

  • Reduced weight compared to other systems; minimal weight suspended by coupling due to strain gauge technology
  • Less sensitive to coupling guard deflections
  • Superior with respect to the effects on balance and natural frequency compared to other torque metering technologies
  • No gear teeth to generate windage and heat in coupling guard



Torque Metering Systems Reliability

  • Redundant systems, Two Independent Systems
  • Specific calibration for each individual system
  • Customer support world wide for installation supervision



Torque Metering Systems Service

  • Thorough calibrations for our torque metering systems
  • Quick turn around on in-house recalibration
  • Expert customer support



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