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| Working Group 5.45 |
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Certification of Length Measuring Machines
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Regulations, standards, instruction sheets
Type and design examination certificates of instruments designed to measure lengths and their
combinations in accordance with Directive 2004/22/EC Annex MI-009 of the European Par-liament
Additional focal points of the Working Group are the issuance of
Type and design examination certificates for:
- Length measuring instruments in accordance with Annex MI-009,
chapter II of the MID
A length measuring instrument serves to determine the length of longitudinal structures
(e. g. cloth-, plastics- or cable measuring machines) during a feeding movement of the
product to be measured.
Instructions:
- Area measuring instruments in accordance with Annex MI-009, chapter III of the MID
An area measuring instrument serves to determine the area of irregularly limited objects (e. g. leather)
Instructions:
- Multi-dimensional measuring instruments in accordance with Annex MI-009, chapter IV of MID
A multi-dimensional measuring instrument serves to determine the edge lengths (length, height, width)
of the smallest enveloping cuboid of a product to be measured.
Instructions:
For the above instruments, the requirements of the Welmec Guide 7.2 and the general conditions of the
Certification Body for Measuring Instruments of PTB (ZS-M) must be taken into account in addition.
Test and approval for verification of round timber measuring systems
The round timber measuring systems are used to automatically measure the length and diameter of logs and
to calculate the wood volume from these measurements. Calculation is performed in accordance with these
volumes based on length measurements and with some quality criteria. The measuring systems thus are
subject to mandatory verification. In Germany, only soft wood is marketed in this way. The required approval
tests are exclusively performed in situ.
Instructions:
Test and approval for verification of choirometers
Choirometers are length measuring instruments, with the aid of which pork carcasses are classified into legal
grades in an objective, reproducible way. The German implementation of the above EU Ordinance is the
Grade Ordinance for sides of pork. Due to the different physical measuring technologies of the choirometer types,
a distinction is made between optoelectronic designs, which work invasively, ultrasound designs, in the case of
which the measuring head is placed onto the surface of the carcass, and the so-called classification automats
which classify complete sides of pork.
Instructions:
© Physikalisch-Technische Bundesanstalt
Page created: 26-Sep-2006, last update: 18-Sep-2007 01:33 PM,
K. Eggert |
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