New techniques and industrial processes emit infrasound or ultrasound (wind turbines, heat pumps, ultrasonic cleaning systems...), while the mechanism of sound perception outside the hearing range is currently not well understood. Manufacturers and operators of these installations need noise emission regulations to be well-founded and not unnecessarily restrictive: it is therefore necessary to define rational and substantiated criteria to prevent the risks associated with these sounds.

Objectives

Understanding human perception of non-audible sounds

Define the metrological structure necessary to apply safety criteria based on sound perception thresholds

Provide traceability to national standards through the development of a universal ear simulator to model human ear impedance for both adults and children

Summary

Find here the detailled description of the project:

http://www.ptb.de/emrp/ears-project.html

Publications et communications

LAVERGNE T., RODRIGUES D., NEIMANNS V., OLSEN E. S. et BARHAM R., “Universal ear simulator: Specifications and artificial ear canal design”, Internoise 2013, Innsbruck, Autriche,  September 15th-18th 2013.

RODRIGUES D., LAVERGNE T., FEDTKE T., OLSEN E. S., BARHAM R. et DUROCHER J.-N., “Methodology of designing an ear simulator”, Internoise 2013, Innsbruck, Autriche, September 15th-18th 2013.

RODRIGUES D., LAVERGNE T., OLSEN E.S., FEDTKE T., BARHAM R. et DUROCHER J.-N., “Methodology of Designing an Occluded Ear Simulator”, Acta Acustica united with Acustica, 101, 5, 2015, 1007-1015, DOI: 10.3813/AAA.918895.

RODRIGUES D., LAVERGNE T., OLSEN E.S., BARHAM R., FEDTKE T. et  DUROCHER J.-N., “Design of a new ear simulator”, Inter-Noise 2015, San Francisco, United States of America, August 9th-12th 2015.

 

Partners

Laboratoires nationaux de métrologie :

  • PTB (coordinateur du projet),
  • NPL,
  • LNE,
  • DFM,
  • Tubitak UME,
  • BKSV-DPLA

The European project, coordinated by the SFI-Davos (Switzerland), aims to develop methods for measuring direct, diffuse and global solar spectral irradiance between 290 nm and 400 nm with an uncertainty of 1% to 2% and new instruments for rapid measurement of spectral irradiance (UV to TF spectroradiometers) to take into account rapid variations in atmospheric conditions (measurement duration less than 10 s and repetition time less than 1 min).

Objectives

Improved measurements of UV radiation from the solar spectrum reaching the ground

Estimation of uncertainties of matrix spectroradiometers

Development of a photodiode array spectroradiometer optimized for spectrum measurement between 290 nm and 400 nm and with minimization of stray light

Summary

Find here the detailled description of the project:

http://projects.pmodwrc.ch/env03/

Publications and communications

DUBARD J. et  ETIENNE R., “Monte Carlo uncertainty evaluation of UV solar spectral irradiance measurements using array spectroradiometer”, 7th Workshop on Ultraviolet radiation measurements (UVNET), Davos, Suisse, 27-28 août 2013.

DUBARD J., VALIN T., ETIENNE R. et EBRARD G., “EMRP-ENV03: Traceability for surface  spectral solar ultraviolet radiation”, 16e Congrès International de Métrologie, Paris, France, 7-10 octobre 2013, DOI: 10.1051/METROLOGY/201318001.

Partners

JRP-ENV03 partners:

  • SFI Davos (Switzerland),
  • EJPD/METAS (Switzerland),
  • PTB (Germany),
  • VSL (Netherlands),
  • CMI (Czech Republic),
  • LNE (France),
  • INRIM (Italy),
  • Aalto (Finland),
  • CMS (Austria),
  • Kipp&Zonen (Netherlands),
  • IMU (Austria).

At micro and nano-scale liquid flow rates, calibration is critical, especially for applications such as volumetric dosing and drug delivery. In particular, for drugs with a very short half-life (in the order of one minute), or for drugs that require a very low blood concentration for toxicity reasons, such as vasoactive or anaesthetic drugs, the exact amount of volume administered as well as the stability of the flow rate are crucial.

Objectives

Establishment of an infrastructure for calibration of drug delivery systems for flows up to 10-100 nl/min

Development of transfer standards for on-site calibration of drug delivery equipment

Performance evaluation of drug delivery devices, dependence on operating conditions and clinical characteristics

Provision of a good practice guide for drug dispensing and improved calibration services for drug delivery devices

Summary

Find here the detailled description of the project:

http://www.drugmetrology.com

Publications and communications

BATISTA E., FILIPE E., BISSIG H., PETTER H.T., LUCAS P., OGHEARD F. and NIEMANN A.K., “European research project on microflow measurements – MEDD”, 9th International Symposium on Fluid Flow Measurement, Arlington, United States of America, April 14th-17th 2015.

BISSIG H., PETTER H.T., LUCAS P., BATISTA E., FILIPE E., ALMEIDA N., RIBEIRO L.F., GALA J., MARTINS R., SAVANIER B., OGHEARD F., NIEMANN A.K., LÖTTERS J. and SPARREBOOM W., “Primary standards for measuring flow rates from 100 nl/min to 1 ml/min – gravimetric principle”, Biomedical Engineering / Biomedizinische Technik, 60, 4, 2015, 301–316, DOI: 10.1515/bmt-2014-0145.

DAVID CH., MELVAD C., BISSIG H. and BATISTA E., “Research interlaboratories comparison for small liquid flow rates (2g/h to 600g/h)”, 16th Flow Measurement Conference (FLOMEKO), Paris, France, September 24th-26th 2013.

OGHEARD F., BATISTA E., BISSIG H., PETTER H.T., LUCAS P. and NIEMANN A.K., “Metrological assessment of micro flow-meters and drug delivery devices in the scope of the "MeDD" EMRP project”, 17e Congrès international de métrologie, Paris, France, September 21st-24th 2015, DOI: 10.1051/metrology/20150009004.

LUCAS P., SNIJDER R.A., TIMMERMAN A.M.D.E., BATISTA, E., BISSIG H. and OGHEARD F., “Best Practice Guide”, Version: 13-05-2015.

Partners

  • VSL,
  • CETIAT,
  • CMI,
  • DTI,
  • IPQ,
  • METAS,
  • TUBITAK,
  • FH Lubeck,
  • UMC Utrecht

The noise of machinery or equipment is a technical characteristic generally declared in terms of acoustic power (power level in dB in relation to a reference acoustic power of 10-12 watt). In Europe, this declaration of power is often imposed by regulation.

Objectives

Develop a primary reference source to disseminate the acoustic power unit

Summary

Find here the detailled description of the project

http://www.ptb.de/emrp/sib56-home.html

Publications and communications

CELLARD P., ANDERSSON H., BREZAS S., et WITTSTOCK V., “Automatic sound field sampling mechanisms to disseminate the unit watt in airborne sound”, Proceedings of the INTER-NOISE 2016, 45th International Congress and Exposition on Noise Control Engineering,  Towards a Quieter Future, Hamburg; Germany; 21 – 24 août 2016, 6762-6770

BREZAS S. , CELLARD P. , ANDERSSON H. , GUGLIELMONE C., KIRBAS C., “Dissemination of the unit Watt in airborne sound: aerodynamic reference sound sources as transfer standards”,In: Proceedings of the INTER-NOISE 2016, 45th International Congress and Exposition on Noise Control Engineering,  Towards a Quieter Future, Hamburg; Germany;  21 – 24 août 2016,  6762-6770

Partners

Laboratoires nationaux de métrologie :

  • PTB (DE),
  • INRIM (IT),
  • SP (SE),
  • TUBITAK (TK)