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Weighing Instruments

Working Group 1.12

Profile

The staff members of working group 1.12 weighing instruments are competent partners of manufacturers, verification authorities, market surveillance bodies as well as other notified bodies. They assist the conformity assessment body of PTB (KBS) and the committee for determining technical rules (REA) when dealing with any question that may arise from the requirements of legal metrology.

All questions with regard to metrological requirements on weighing instruments in the field of legal control, metrological tests as per standards and normative documents (e.g. EN45501 and OIML recommendations) are considered. This also applies to performing conformity assessments as per Modules B and G within the scope of the law on measuring and verification (MessEG) and the European Directives NAWID and MID.

We offer the following services to manufacturers: Testing and evaluating of weighing instruments, modules of weighing instruments and devices intended to be connected to weighing instruments. These activities are pursued within the scope of the law on measuring and verification (MessEG), NAWID, MID and certification programmes of WELMEC and OIML.

We also supply technical experts for audits of the German Accreditation Service (DAkkS) and the KBS, to the latter within the frame of conformity assessments as per Module D.

There are many links between the working group and other institutions on a national and an international level. Staff members participate in a huge number of committees and working groups (e.g. OIML, WELMC, DIN, verification authorities, VDMA). They make essential contributions to ensuring accuracy, metrological security and measurement stability while creating rules and adopting existing rules to the state of the art. Moreover, they strive to harmonize requirements and foster the dialogues between the various market actors such as manufacturers, notified bodies, market surveillance bodies and the verifications bodies.

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Research/Development

Research and development includes developing new test procedure for assessing weighing instruments and modules of weighing instruments as well as developing new test sites and sensors intended to be used for weighing technology.

At present activities are focused on examining a new test site for testing load cells having a nominal load up to 20 tons (testing in an extended temperature range) and on supporting projects of working groups Opens internal link in new window1.13 and Opens internal link in new window1.14.

Moreover, the working group 1.12 is deeply involved in developing a new guide system for implementation of the WELMEC certification system as per Opens external link in new windowWELMEC Guide 8.8.

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Services

The working group 1.12 weighing instruments offers the following services:

Services for manufacturers and producers:

Testing, evaluating and certification:

  • of weighing instruments as per MessEG, NAWID und MID
  • of weighing instruments and load cells according to the OIML MAA and the OIML Basic certification system
  • of module and devices of weighing instruments on basis of the certification system as per WELMEC Guide 8.8
  • of notifications of modification on weighing instruments, load cells or modules of weighing instruments
  • of modification on modules of weighing instruments and devices of weighing instruments on basis of WELMEC Guides

 

2. Briefings with regard to testing, evaluating and certification of weighing instruments and modules of weighing instruments

These services are offered in behalf of the conformity assessment body (KBS) of the PTB. Further information on conformity assessment procedures can be found on the internet site of the KBS (Opens internal link in new windowKBS).


Please, use Opens internal link in new windowApplication forms of the conformity assessment body of PTB and send it to
Opens window for sending emailwaagen(at)ptb.de.

 

3. Testing of weighing instruments and components of weighing instruments on basis of procedures agreed on with the manufacturer. For further enquiry directly address to
Opens window for sending emailDr. Mack.

The costs for testing, evaluating and certification as well as for briefings depend on the time needed. The hourly wage rates are laid down in the “Kostenverordnung für Nutzleistungen”
(Opens internal link in current windowKVONL).

Services on behalf of DAkkS:

  • Supplying technical experts for performing audits of calibration laboratories for non automatic weighing instruments as per EURAMET Guide cg-18.

For further enquiry directly address to Mr.  Opens window for sending emailDenzel.

Services on behalf of KBS:

  •  Supplying technical experts for checking production quality control of of weighing instruments as per MessEG, NAWID and MID.

For further enquiry directly address to Mr.  Opens window for sending emailDr. Mack.

Further services:

Consulting and supporting

  • Verification authorities and conformity assessment bodies including the KBS
  • Manufacturers with regard to running through conformity assessment procedures

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Information

Regulations, norms and recommendations:

  • Measurement and verification law (Opens external link in new windowMessEG)
  • Measurement and verification ordinance (Opens external link in new windowMessEV)
  • European Directive 2014/31/EU (Opens external link in new windowNAWID)
  • European Measurement Instruments Directive(Opens external link in new windowMID)
  • OIML Recommendations (Opens external link in new windowOIML)
  • WELMEC Guides (Opens external link in new windowWELMEC)

Interesting links:

  • Verification authorithies (Opens external link in new windowEichamt)
  • Working group metrology and verification (Opens external link in new windowAGME)
  • VDMA - department weighing technology (Opens external link in new windowVDMA)

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