Role of accreditation in this sector
It is impossible to imagine metrology – the science of measurement – without accreditation. Because accredited calibration and testing laboratories ensure that measurands of whatever nature are objective and reliable. They make an essential contribution to ensuring that consumers can be confident that in terms of their size or mass, the goods they buy do in fact live up to the information on the packaging. This is also highly relevant for the economy and international trade.
Accreditation provides objective evidence that the reference and working standards for indications such as metre, kilogram and hertz are traced back to the so-called national standards, which fall under the remit of the National Metrology Institute of Germany (PTB). Only then are these units in conformity with internationally recognised conventions such as the International System of Units (SI units). Accreditation in the area of metrology therefore ensures that a screw from China and a nut from Belgium fit together without any problems.
Our technical units in the Metrology sector
Dimensional and Electrical Quantities | High Frequency and Radiation Quantities
The work of this technical unit focuses on the accreditation in accordance with DIN EN ISO/IEC 17025 of laboratories offering calibration in the areas of dimensional and electrical quantities, high-frequency quantities and radiation quantities.
Mechanical, Thermodynamic, Chemical and Medical Quantities | Measuring Instruments
The work of this technical unit focuses on the accreditation in accordance with DIN EN ISO/IEC 17025 of laboratories offering calibration in the areas of mechanical, thermodynamic, chemical and medical quantities, as well as measuring instruments.
Application examples of accredited services in this sector
- Inspection and certification of measuring instruments
- Calibrations of mass fractions of elements, measuring instruments for electrolytic conductivity, pH value or liquid volumes and liquid densities, and viscosity of liquids
- Test equipment monitoring in the range from a few nanometres to about 20 metres
- Calibration of measurement standards up to virtual coordinate measuring instruments
- Calibration of high-tech measuring instruments for the detection and process control of high-voltage discharges, but also in the area of electrical energy, for example for the testing of electricity meters and the calibration of current and voltage measuring transformers used in industry
- Calibration of high frequency transfer standards for industrial high-tech laboratories through to the calibration of mobile measuring instruments used to test electromagnetic compatibility (EMC)
- Calibration of measuring instruments in the area of traditional mechanical measurands, such as force, pressure, acceleration and mass
- Calibration of measuring equipment components in material testing machines, such as force or length measuring equipment
- Calibration of measuring instruments relevant to automotive engineering, such as headlight adjustment systems, brake test benches and exhaust fume measuring instruments
- Calibration of measuring instruments for relative humidity and measuring instruments for absolute humidity