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TM
The Uncertainty Calculator is designed to
evaluate the uncertainties of chemical and physical measurements and
calibrations. The evaluation follows the rules of the ISO guide to the
expression of uncertainty in measurement and the EURACHEM document
Quantifying Uncertainty in Analytical Measurement 2000. The program guides
the user to evaluate the measuring process: (1) to specify the
relationship between the measured and the parameters upon which it
depends, (2) to identify the sources that contribute to uncertainty, (3)
to quantify of these contributions, and (4) to calculate the total
uncertainty as requested by the ISO guide. The Uncertainty Calculator
creates a cause and effect diagram (Ishikawa or 'fishbone' diagram) from
the equation that specifies the relationship between y, the value of
interest, and the various parameters that contribute to uncertainty. In
the process of identifying factors that contribute to uncertainty the user
can modify the diagram, for instance by adding other sources that
contribute to the uncertainty. The process is made easy by the built-in
powerful builder. The user is simply prompted to fill all branches of the
diagram indicating the values of parameters and the associated uncertainty
components. The program then automatically calculates the value of the
property of interest (the measurand) and the final combined standard
uncertainty, the effective degrees of freedom, the coverage factor, and
the extended uncertainty which appear in the root cell of the diagram. The
program generates a report that includes the variables used, their symbols
and values, the assigned standard uncertainties, the calculated combined
uncertainties, the estimated effective degrees of freedom, the sensitivity
coefficients worked out by the model equation.
- Creation and editing of the cause and effect diagrams
- Automatic calculation of the measured value and related combined
standard uncertainty defined by the cause and effect diagram
- Database of models which contains preprocessed diagrams of various
methods of a measurement
- Database of the measurements represented by filled diagrams
- Data administration based on the principle that one user can't intervene
data of another
- Examples that illustrate the capabilities of the Uncertainty Calculator
| P/N A16032 |
Uncertainty Pro Single
User |
$ 499.00 |
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| P/N A16032 |
Uncertainty Pro 5 User |
$ 1999.00 |
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| P/N A16032 |
Uncertainty Pro 15 User |
$ 3,999.00 |
|
For more information on these products
contact us at info@chemsw.com
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