IFA method for calculating expanded measurement uncertainty

User interface of the program for calculating expanded measurement uncertainty
Source: Sorce: IFA

To assess the performance of measuring methods, DIN EN 482 describes the procedure for calculating expanded measurement uncertainty. The standard defines the permissible limits of measurement uncertainty for hazardous substance measuring methods. A program is available to aid calculation.

The calculation program for the assessment of measuring methods for gases and vapours is based on the procedure introduced at the IFA and implements the provisions of DIN EN 482 “General requirements for the performance of procedures for the measurement of chemical agents” and DIN EN 1076 “Procedures for measuring gases and vapours using pumped samplers. Requirements and test methods”.

The program is executed online and, after input of all the data, calculates the expanded measurement uncertainty to standard. The calculation can be printed out for documentation during the preparation of standard work instructions and for their submission for accreditation. It is composed of several modules and encompasses the following:

  • sampling
  • sample transport and storage
  • climatic influences and
  • analysis contributions to measurement uncertainty.

Further modules are in preparation, including a module for estimating measurement uncertainty during the sampling of inhalable and respirable aerosols.

Use

The program for calculating expanded measurement uncertainty is permitted for use for occupational health purposes.

Liability

The program for calculating expanded measurement uncertainty has been developed and tested with the utmost care. Nevertheless, no liability, on whatever legal grounds, can be accepted for the accuracy of results.

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Publisher

The program for calculating expanded measurement uncertainty is issued and managed by the Institute for Occupational Safety and Health (IFA) of the German Social Accident Insurance.


Contact

Petra Heckmann

Division 2: Chemical and biological hazards

Tel: +49 2241 231-2844
Fax: +49 2241 231-2234


Prof Dr Dietmar Breuer

Division 2: Chemical and biological hazards

Tel: +49 2241 231-2533
Fax: +49 2241 231-2234