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Accuracy

Accuracy of a measurement instrument defines how much a measurement value may deviate from the perfect measured value.

The total error can be broken down into many component errors such as non-linearity, hysteresis, repeatability, temperature errors, stability, zero offset and span offset.

Accuracy is very closely connected with precision, but unlike precision it is constrained by a series of fixed reference points or absolute values that all readings are compared with to define the exactness of the instrument measurement. Typically these comparison absolute values are read from a more accurate instrument ideally with a 10 to 1 ratio difference in accuracy to ensure it does not contribute significantly to the overall error calculation. However in practise it is not always possible to achieve such a high ratio difference in accuracy. When this is the case the overall accuracy should also include the reference instrument uncertainty which better reflects the true accuracy of the device.

High accuracy measurement products
  • PD39X High Differential Pressure Transmitter PD39X Twin Absolute Digital DP Sensor
  • 10 bar calibration reference pressure sensor
  • Digital pressure gauge for calibrating steam gauges from vulcanisation presses
  • PD39X High Differential Pressure Transmitter PD39X High Differential Pressure Transmitter

Request info on high accuracy measurement products for your application.

Accuracy Related Terms

More pages related to accuracy technical terms.

  • 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
  • Precision
  • 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

Primary Sidebar

Product Selection Guides

  • Pressure Transmitters
  • Pressure Transducers
  • Liquid Level Sensors
  • Digital Pressure Gauges
  • Data Loggers

Application Selection Guides

  • Vacuum
  • Submersible
  • Low Pressure Range
  • Leak Testing
  • High Frequency Response
  • Dual Temperature and Pressure
  • Barometric Pressure

Help Guides

  • Reduce calibration costs of analogue pressure gauges
  • Measuring the difference in air pressure between rooms
  • How to get a 10 volt signal from a 4-20mA output pressure sensor
  • How to Connect a 4-20mA Current Loop Pressure Transmitter
  • Determining the hydrostatic pressure range for a tank level sensor
  • Choosing PVC, PUR, FEP and TPE cable types

Online Measurement Tools

  • Temperature Transmitter 4-20mA Current Output Calculator
  • Pressure Transmitter 4-20mA Current Output Calculator
  • Pressure Transducer 1-5V Voltage Output Calculator
  • Pressure Converter
  • Measurement Reading to 4-20mA Signal Converter
  • Liquid Depth/Level to Hydrostatic Pressure Calculator
  • Input to Output Measurement Reading Converter
  • Force & Area to Pressure Calculator
  • Density to Specific Gravity Calculator

Product Enquiry

Send us your enquiry for a product associated with this Accuracy page, and get assistance with selecting a product for your application.

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enquiries@sensorsone.com

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