Seminar Uncertainty of Measurement

Determination and calculation of uncertainties of measurement


  • Definition of the measurand and measurement task
  • Model formation, ideal model
  • Normal and metrological traceability
  • Determination of influence quantities
  • Calculation type A: repeated measurements
  • Determination of degrees of freedom
  • Best estimate: arithmetic mean value
  • Empirical standard deviation
  • Standard uncertainty: standard deviation
  • Type B: Data from other information sources
  • Distribution functions (Gaussian distribution, rectangular distribution)
  • Approach to rectangular distribution (width of distribution, half-width)
  • Probability density function with coverage interval
  • Consideration of correlated input variables
  • Linearization of the model, sensitivity coefficients
  • Compilation of the knowledge about the input variables
  • Compilation of the uncertainty balance
  • Specification of the complete measurement result (k-factor)


  • Basis: Calibration guideline "Calibration of pressure measuring instruments according to DKD-R 6-1"
  • Physical basics of pressure measurement technology
  • Functioning of analog and digital sensors
  • Operation of piston pressure gauges
  • Applications with pressure controller
  • Metrological influences
    • Standard measuring equipment
    • Measuring setup
    • Repeatability
    • Hysteresis
  • Measurement uncertainty balance
    • Basics (normal distribution, rectangular distribution)
    • Modeling
    • Normal measurement equipment (calibration uncertainty, drift estimation)
    • Calibration object (measurement, repeatability, hysteresis)
    • Specification of the complete measurement result (k-factor)


  • Individual examples
    • Measurement uncertainty balance with EXCEL
    • Measurement uncertainty balance with GUM WorkBench

Aim of our training

  • Realization of your tasks
  • Exemplary creation of measurement uncertainty balances from your everyday life