News

Update available - EURAMET Calibration Guide No. 18

EURAMET is happy to announce that the revised version of its Calibration Guide No. 18 'Guidelines on the Calibration of Non-Automatic Weighing Instruments' has been published.

The purpose of the guide, from the field 'Mass and Related Quantities', is to enhance the equivalence and mutual recognition of calibration results obtained by laboratories performing calibrations of non-automatic weighing instruments. It contains advice on general aspects of calibration, measurement methods and results, including uncertainty of measurement, the calibration certificate and the use of mass or conventional mass values.

EURAMET's Calibration Guide No. 18 was first published more than 10 years ago and has been regularly updated since then. The guide has become one of the most requested documents provided by EURAMET. "It was adopted by other Regional Metrology Organisations and is widely used by accreditation bodies as a mandatory document. This latest update is the first review involving direct collaboration with balance manufacturers," explains Nieves Medina Martin (CEM, Spain) who coordinated the EURAMET project 'Review of EURAMET cg 18: Guidelines on the Calibration of Non-Automatic Weighing Instruments'.

Important improvements of the 4th version include: clarification in the use of substitution loads, calculation for the eccentricity test, a more accurate formula for uncertainty related to the correction for air buoyancy, better approximation for air density variation, improved approximation methods, determination of minimum weight and better understanding of the effect of balance adjustment. There are no changes to the underlying calibration procedures.

The 4th version of the EURAMET Calibration Guide No. 18 was developed thanks to the cooperation of Stuart Davidson (NPL, United Kingdom), Klaus Fritsch (Mettler Toledo, Switzerland), Matej Grum (MIRS, Slovenia), Andrea Malengo (INRIM, Italy), Nieves Medina (CEM, Spain), George Popa (INM, Romania) and Norbert Schnell (Sartorius, Germany).

Select your area of interest
A new measurement system for measurements at vehicle inductive charging stations
2021-02-25

EMPIR project enables new power measurements to support safe and efficient charging of low carbon electric vehicles more

EMNs and TCs help identify research needs related to the European Green Deal
2021-02-25

EURAMET Technical Committees and European Metrology Networks support the Call by including needs of their stakeholders more

EC proposal for a European Partnership on Metrology published
2021-02-23

EURAMET welcomes the Commission’s publication of its proposal for a European Partnership on Metrology under Horizon Europe. more

EMPIR project research published in journal article about mobile phone lenses
2021-02-18

Measurements support innovation in optical aspheres and freeform surfaces such as those used for phone camera lenses more

Improving nanoparticle size measurement accuracy for safety assessment
2021-02-16

EMPIR nanoparticle project contributes to new written standard and other outputs more

Page 1 of 167.