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WELMEC WG 2

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WELMEC 2 (2021)

Directives 2014/31/EU and 2014/32/EU: Common Application Non-Automatic Weighing Instruments (NAWI) Automatic Weighing Instruments (AWI) Multi-dimensional Measuring Instruments (MDMI)

This Guide is intended to provide guidance to all those concerned with the application of Directive 2014/31/EU of the European Parliament and of the Council of 26 February 2014 on non-automatic weighing instruments (NAWIs) and the related harmonized standard EN 45501:2015, and Directive 2014/32/EU1 of the European Parliament and of the Council of 26 February 2014 on measuring instruments (MID) in relation to automatic weighing instruments (AWIs) and multi-dimensional measuring instruments (MDMIs).

Note. The first Directive 71/316/EEC, aimed at ensuring the uniformity of measurements in the EU, was adopted by the European Council on 26 July 1971. It was further amended by Measuring Instruments Directive 2004/22/EC, adopted on 30 April 2004. Its application in the EU started on 30 October 2006 and a 10-year transition period was planned for is implementation. However, in 2014 the European Parliament and European Council adopted a new Measuring Instruments Directive 2014/32/EU, which entered into force on 20 April 2016.

link to the WELMEC webpage

WELMEC 2.2 Issue 3 (2007)

Guide for Testing Point of Sale (POS) Devices (Non-Automatic Weighing Instruments)

This guide specifies the requirements for electronic Point Of Sale (POS) devices connected to a non-automatic weighing instrument (NAWI) intended to be used for direct sales to the public via a digital protective interface on the NAWI.

The following types of POS devices are covered by this guide:

  • Price-computing POS devices, which receive only the weight data from the NAWI and perform the price calculation.
  • Non-price-computing POS devices, which receive the weight, unit price and price to pay data from the NAWI.
  • Non-price-computing POS devices that transfer PLU (Price Look-Up code) values to the price-computing NAWI and receive the weight, unit price and price to pay data back from the NAWI.

WELMEC 2.4 Issue 3 (2021)

Guide Defining Non-Critical Constructions for NAWI and AWI

This guide aims to harmonize the conditions for general acceptance of load transmissions (LTs) and load receptors (LRs) in the Type Examination Certificate (TEC) of WIs.

WELMEC 2.6 Issue 3 (2008)

Guide for the Testing of Automatic Catchweighing Instruments

The guide describes the procedures suitable to be used when testing automatic catchweighing instruments for type examination according to the Measuring Instruments Directive (2004/22/EC) [MID]. The document is based on using OIML Recommendation R51:2006 Automatic catchweighing instruments as “Normative document”.

This guide gives additions to, or interpretations of, OIML R51 accepted by WELMEC members. This guide refers also to other WELMEC guides and especially those developed for non-automatic weighing instruments [NAWIs].

WELMEC 2.8 Issue 2 May 2012

Guide for Conversion of NAWI (Indicator) Test results for AWI Purposes

The objective of this guide is to supply the background to simply using results of tests performed on NAWIs based on EN 45501 and OIML R76/2006 to issue type examination and design examination certificates according to Measuring Instruments directive 2004/22/EC (MID) for instruments covered by the following OIML recommendations: R51, R61, R107.

WELMEC Guide 2.10 (2021)

Technical Implementation Of The Modular Evaluation For Non-Automatic Weighing And Automatic Weighing Instruments

This guide covers the technical implementation of the voluntary modular evaluation according to WELMEC 8.8 for Non-automatic Weighing Instruments (NAWIs) and Automatic Weighing Instruments (AWIs) that needs to be conformity assessed under the Directive 2014/31/EU (NAWID) or the Measuring Instruments directive 2014/32/EU (MID).
Last Update: 19.02.2024 | Disclaimer & Copyright | Print-Version
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