Metrology.NET®

Metrology Taxonomy

TestProcess.Measure.Torque.HydraulicPressure

Definition- A test process that measures the accuracy of hydraulic torque wrenches where hydraulic pressure is applied to the torque wrench and it applies a known torque to the nut or bolt being tightened.

This process usually is used to calibrate hydraulic torque wrenches producing a lookup sheet the operator can use to quickly look up the pressure required to correctly torque the bolt or nut.

Required Parameters

  • Pressure – The hydraulic pressure applied {in Pa if the unit of measure is included}
  • Torque – The expected torque output {in Nm if the unit of measure is included}

Optional Parameters

  • Direction – {CW, CCW}
  • Connector – Text

Output Value & Uncertainty

  • Torque

TestProcess.Measure.Ratio.FrequencyModulation.Delta.Rate

A test process measuring the deviation change of a frequency modulated signal as the modulation rate frequency is changed from the referenced modulation rate frequency.  The signal source is set up at a specified fixed carrier frequency, with a fixed deviation frequency then only the modulation rate frequency is changed from the reference rate frequency to the test rate frequency.  The resulting values are measures as a dB change or % change.

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TestProcess.Measure.Ratio.PhaseModulation.Delta.Rate

A test process measuring the phase modulation change of a phase modulated signal as the modulation rate frequency is changed from the referenced modulation rate frequency.  The signal source is set up at a specified fixed carrier frequency, with a fixed deviation frequency then only the modulation rate frequency is changed from the reference rate frequency to the test rate frequency.  The resulting values are measures as a dB change or % change.

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