Welcome to the Open Access Repository of the Physikalisch-Technische Bundesanstalt (PTB-OAR)

PTB is the national metrology institute of the Federal Republic of Germany.

This database grants free access to a number of documents and factual datasets that were elaborated at PTB. This includes publications such as the "PTB-Mitteilungen", the metrological expert journal of PTB, and numerous of documents from the field of legal metrology.

Please use the search function or the category selection on the right-hand side to find the publications you are looking for.

When downloading the publications, please take the license conditions for further use into account.

All Resources

Von Würfeln und Partitionen, Best-of-Summenverteilung bei beliebigen Würfeln und Partitionen natürlicher Zahlen (2020); Bender, Alexander; Thainat, Amin; DOI: 10.7795/320.201907
Sammelbilder optimal sammeln, Eine Lösung für das Sammelbilder-Problem unter praxisnahen Annahmen (2020); Braband, Niklas; Braband, Sonja; Braband, Malte; DOI: 10.7795/320.201908
Keine Algenplage mehr in Teich, Aquarium und Co., Untersuchung einer neuartigen biologischen Filtervorrichtung zur Sanierung Eutrophierter Kleingewässer (2020); Melillo, David; DOI: 10.7795/320.201909
Калибровка приборов для измерения вакуума, Неопределённости измерений : Методическая инструкция DKD-R 6-2 Часть 2 (2020); Члены Технического комитета DKD Давление и вакуум в период с 1999 г. по 2009 г; DOI: 10.7795/550.20180828AKRU
Validation of a calibration-free, high-temp dTDLAS-based humidity sensor by means of PTB humidity standards (2020); Bohlius, Henning; Biondo, Luigi; Bubser, Florian; Werhahn, Olav; Wagner, Steven; Ebert, Volker; DOI: 10.7795/810.20200122
Aus der metrologischen Welt 2019 (2020); Bauch, Andreas; Klein, Tobias; Piester, Dirk; Gutbrod, Martin; Sibold, Dieter; Klein, Tobias; Piester, Dirk; Schwartz, Roman; Ulbig, Peter; DOI: 10.7795/310.20190499
The spatial heterogeneity effects on dTDLAS-based CO sensor for industrial emission monitoring applications (2020); Qu, Zhechao; Werhahn, Olav; Ebert, Volker; DOI: 10.7795/810.20200114
Der Deutsche Kalibrierdienst (DKD): Eine Erfolgsgeschichte geht weiter (2019); Ulbig, Peter; Czaske, Martin; Ullrich, Joachim; Janssen, Ole; Simon, Jens; Frischmuth, Imke; Finke, Stephan; Kaiser, Ulrich; Kulessa, Beate; Stenner, Lioba; Ahrendt, Lars; Nicklich, Holger; Escher, Marcus; Schumann, Gerhard; DOI: 10.7795/310.20190399
Nationaler Ringvergleich Oberflächenbeschaffenheit: Bestimmung von Rauheitskenngrößen an Raunormalen und Tiefeneinstellnormalen : Vergleichsbericht DKD-V 4.2 (2019); Physikalisch-Technische Bundesanstalt (PTB); DOI: 10.7795/550.20191205
Guards and Watchdogs in One-Way Synchronization with Delay-Related Authentication Mechanisms (2019); Langer, Martin; Teichel, Kristof; Heine, Kai; Sibold, Dieter; Bermbach, Rainer; DOI: 10.7795/EMPIR.17IND06.CA.20191126
Setup and Characterisation of Reference Current-to-Voltage Transformers for Wideband Current Transformers Calibration up to 2 kA (2019); Chen, Yeying; Mohns, Enrico; Badura, Henrik; Räther, Peter; Luiso, Mario; DOI: 10.7795/EMPIR.17IND06.CA.20191122
Mid-IR ICL based TDLAS spectrometer dedicated to monitor HCl concentration in combustion emissions (2019); Qu, Zhechao; Werhahn, Olav; Ebert, Volker; DOI: 10.7795/810.20191119A
Towards a TDLAS based optical gas standard for the absolute HCl measurements in flue gases from combustion process (2019); Qu, Zhechao; Werhahn, Olav; Ebert, Volker; DOI: 10.7795/810.20191119B
Towards a TDLAS based optical gas standard for the absolute HCl measurements in flue gases from combustion process (2019); Qu, Zhechao; Werhahn, Olav; Ebert, Volker; DOI: 10.7795/810.20191105
Fractional frequency ratio difference time series data sets (Optical frequency comb comparison) (2019); Benkler, Erik; Sterr, Uwe; Lipphardt, Burghard; Wilk, Rafal; Puppe, Thomas; Rohde, Felix; DOI: 10.7795/720.20191108