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You are employed at a company at which you work with measurement technology? Here you will find current news which may be of interest to you as well as a guide through PTB. 


In conventional superconducting gravimeters, a test mass is levitated by the magnetic field of a superconducting coil. An elaborate adjustment allows the gravity of the earth to be measured at geographical locations by means of this measurement principle. PTB's new invention is based on an alternative geometry of the magnetic field and thus contains a new test mass in the form of a double cone. In this arrangement, the test mass centers itself, making a complex feedback circuit obsolete. The measuring signal is generated inductively by means of pick-up coils so that it is possible to en-hance the resolution by a factor of up to 100 (depending on the technology used).  (Technology Offer 0429)

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Whether you are a high-end music connoisseur in your living room or a record-ing engineer in your recording studio, you both know them well – the location-dependent low-resonance frequencies which can be extremely unpleasant when listening to music. Low-frequency noise originating from machines can be similarly amplified in industrial locations due to room resonances. With PTB's invention – a tunable Helmholtz resonator which can be finely adjusted according to the ambient environment – it is possible to optimize room acoustics in the low-frequency range.
A pre-dimensioned module the size of a medium loudspeaker combined with an element which allows adjustment to the room's resonance frequencies can considerably reduce low-resonance frequencies in the range from 20 Hz to 200 Hz. (Technology Offer 0346)

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To have a measuring instrument calibrated

Ball plate

In the chapter Opens internal link in current windowMetrological Services (which at this point we would like to recommend to you in general) you will find an overview of the Opens internal link in current windowPTB's Calibration and Measurement Capabilities. Furthermore, each division offers its own measurement and calibration capabilities as a pdf file in each case for downloading – to be found via the respective homepage of the Opens internal link in current windowDivisions.

Professional publications

Testing Instruction
Titelseitenansicht PTB Prüfregel Band 3

PTB has issued a great number of publications surrounding the topic (precision) measurements, for example Test Rules, PTB Requirements, among other things. You will find these at Opens internal link in current windowScientific & technical publications.

Technology offers

Gap measurement standard

Do you want to see whether there are PTB inventions that could possibly be commercially exploited in your company? If so, then have a look at Opens internal link in current windowInnovations and Technology Transfer. You will also find current technology offers in the current issue of Opens internal link in current windowPTB-News

Invitations to Tender of the Procurement Office

Are there goods you may want to offer PTB? Then take a look at the current current invitations to tender of PTB's Procurement Office!