Uncertainty Calculator is designed to address the need to document analyses of measurement accuracy (uncertainty) in a simple, straightforward manner and is consistent with the ISO Guide to Uncertainty in Measurement ('GUM'). It includes examples from authoritative documents such as those published by NIST, NCSL, UKAS, SINGLAS and EA.
Key Features:
Effective Degrees of Freedom – The Welch-Satterthwaite equation for computing effective degrees of freedom has been incorporated with the ability to define group and individual Type ‘B’ relative uncertainties.
Numerical Methods for Computing Sensitivity Coefficients – Several Type ‘A’ and Type ‘B’ algorithms have been incorporated for computing sensitivity coefficients including Type ‘B’ uncertainties derived experimentally using common, partial and differential equation computations.
Correlated Input Quantities – Methodology for computing correlated input quantities.
System File – Provides the means for defining application paths and for assignment of a default data file directory. The System file is also used to assign a report application (Microsoft Write®, MS Word® or Excel) and for entry of default report header information. (e.g. company name, department etc.)
Equation Writer – Useful means for creating and documenting measurement equations.
Other Features:
Fields for entering individual and expanded uncertainty units
Fields for entering correlation coefficient approximations for each uncertainty value
Tab menu for accessing all major functions / screens
Student t distribution divisors expanded beyond 'GUM' table
Normal distribution divisor selections have been added
A worksheet for preprocessing uncertainty components comprised of formulae
A worksheet for deriving sample statistics from measurement data
Computation tool for determining an uncertainty value from a given Standard Uncertainty
Bayesian method for computing Effective Degrees of Freedom
Type B individual Effective Degrees of Freedom computations
Quick Print command for printing data without need for Windows application
Excel tools for importing spreadsheet contents
Individual Type A and Type B uncertainty components increased from 10 to 20 each
Expanded on-line dB / Percentage Calculator with memory function
Options screen for changing default setups
Optimized for 800 x 600 display with auto resizing for higher resolutions
Quick print command for displaying contents of main screen
Global column change(s) tool
On-line tutorial
Hot Key assignments for commonly used functions
Manual or Auto-sequence data entry
Remarks expanded from 20 to 40 lines
Downward compatible with previous revisions
Disclaimer - JW Solutions is not responsible for the content or support of any material provided by a third-party.
