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Precision

Precision is the measure of how closely a set of readings will be to a reference line that passes through the middle of all the points.

Precision differs from the term accuracy, since an instrument that is able to measure precisely, may not be able to measure accurately due to an offset or some full scale shift.

A sensors measurement error is normally defined as precision because tight electrical tolerances are difficult to achieve with an analog output signal. Once the zero and full scale points have been ascertained, device scaled via a digital panel meter or other analog to digital converter instrument, the error can then be expressed as accuracy rather than precision.

High accuracy measurement products
  • LEX1 (Ei) High Accuracy Digital Pressure Gauge
  • DMP333i Rangeable High Pressure Precision Transducer
  • 33X High Accuracy Digital Output Pressure Sensor
  • 5 to 30 psi abs range 0-10Vdc output air pressure sensor for air compression use

Accuracy Related Terms

More pages related to accuracy technical terms.

  • Accuracy
  • BSL – Best Straight Line
  • Compensated Temperature Range
  • Digital Compensation
  • g Effect
  • High Accuracy
  • Hysteresis
  • LHR – Linearity, Hysteresis and Repeatability
  • Long Term Stability/Drift
  • NL – Non-Linearity
  • PPM – Parts Per Million
  • Pressure Hysteresis
  • Repeatability
  • RTE – Referred Temperature Error
  • Secondary Pressure Standard
  • TEB – Temperature Error Band
  • TEB – Total Error Band
  • Temperature Compensation
  • Temperature Error
  • Thermal Hysteresis
  • Threshold
  • TSL – Terminal Straight Line
  • TSS – Thermal Span or Sensitivity Shift
  • TZS – Thermal Zero Shift

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