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448 results:
  • 141. PIM measurements on a multiband antenna in the project “5G-Reallabor”  
    Date: 08.12.2020
    Percental score: 5 %
    Dynamic PIM measurement being carried out on a multiband antenna Passive intermodulation (PIM) leads to interference signals in cellular networks and can therefore degrade network quality. In the project “5G-Reallabor”, PTB is working on traceability for PIM  
  • 142. Using UV-C radiation to combat the coronavirus  
    Date: 01.12.2020
    Percental score: 10 %
    Dr. Peter Sperfeld performs measurements of UV-C radiation The Physikalisch-Technische Bundesanstalt (PTB) measured the internal irradiance of a prototype of an indoor UV-C air purification unit to gauge its effectiveness in neutralizing germs and viruses. A  
  • 143. Tilted-Wave Interferometer (TWI) as Example for Hand-in-Hand Calibration of Real and Virtual Experiments  
    Date: 06.11.2020
    Percental score: 5 %
    The optical industry uses aspheres and free-form surfaces in modern optical systems, which, however, place very high demands on metrology. Optical measurement techniques have a prominent role to play  
  • 144. Criteria and Procedures QS Approval June2020  
    Date: 14.09.2020
    Percental score: 1 %
    Criteria and Procedures QS Approval June2020 Conformity Assessment Body Criteria and procedures for the approval of the quality systems of measuring instruments manufacturers according to • the  
  • 145. New high-pressure natural gas test-rig needs a new primary standard  
    Date: 26.08.2020
    Percental score: 5 %
    PTB has developed a new primary standard for the calibration of gas meters using high-pressure natural gas. In future, the so-called high-pressure comparator will form the top of the traceability  
  • 146. 20190520 QI Panafrica Eva Report Final  
    Date: 05.06.2020
    Percental score: 1 %
    20190520 QI Panafrica Eva Report Final INTERNATIONAL COOPERATION EXTERNAL EVALUATION Key evaluator: Renate Müller (Consultant, Economist) Supplementary evaluator: Saida Bunk (Project Coordinator,  
  • 147. 4.21 Form and Wavefront Metrology  
    Date: 03.06.2020
    Percental score: 7 %
    Selected publications The working group offers the following calibrations: Sphericity and radius measurement of sperical sections Refractive index measurement Transmission measurement on  
  • 148. Criteria and Procedures QS Approval May2020  
    Date: 12.05.2020
    Percental score: 1 %
    Criteria and Procedures QS Approval May2020 Conformity Assessment Body Criteria and procedures for the approval of the quality systems of measuring instruments manufacturers according to • the  
  • 149. Zulassungsliste  
    Date: 03.04.2020
    Percental score: 1 %
    Zulassungsliste Zulassungsnr. § - BeschG Zulassungsinhaber Bezeichnung Kaliber Typ 1-69 7 Karl-Heinz Kerner Apparatebau Mod. 287 9 x 17 Viehschussgerät 1-69 7 Jopp GmbH Mod. 287 9 x  
  • 150. Q.24 Building Organization  
    Date: 31.03.2020
    Percental score: 80 %
    Q.24 Building Organization Peggy Schulz Physikalisch-Technische Bundesanstalt Q.24 Bauorganisation Bundesallee 100 38116 Braunschweig peggy.schulz@ptb.de (0531) 592-8623  
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