Abstract:
A high-resolution and high-precision autotransformer ratio capacitance bridge is described that has been built and tested at the Physikalisch-Technische Bundesanstalt for...Show MoreMetadata
Abstract:
A high-resolution and high-precision autotransformer ratio capacitance bridge is described that has been built and tested at the Physikalisch-Technische Bundesanstalt for dielectric-constant gas thermometry. Its main component is a homemade high-precision 1 : 1 inductive voltage divider used in a autotransformer configuration. For balancing the bridge, adjustable in-phase and quadrature currents can be injected. A detailed uncertainty budget is presented for measuring small capacitance changes. Considering correlations between main terms in the mathematical model, it is shown that it is possible to measure capacitance changes of at most a few 0.1% with a relative standard uncertainty below one part per million, i.e., with an uncertainty relative to the capacitance value of order one part per billion.
Published in: IEEE Transactions on Instrumentation and Measurement ( Volume: 60, Issue: 7, July 2011)
Physikalisch-Technisch Bundesanstalt, Berlin, Germany
Bernd Fellmuth was born in Berlin, Germany, on June 25, 1953. He received the Dipl.-Phys. and Dr. rer. nat. degrees at the Humboldt-University zu Berlin, Berlin, Germany, in 1977 and 1980, respectively, in the field of solid-state physics, and the Dr. sc. nat. degree in the field of measurement of low temperatures from the Technical University Dresden, Dresden, Germany, in 1990.
From 1980 to 1990, he was with the Metrologi...Show More
Bernd Fellmuth was born in Berlin, Germany, on June 25, 1953. He received the Dipl.-Phys. and Dr. rer. nat. degrees at the Humboldt-University zu Berlin, Berlin, Germany, in 1977 and 1980, respectively, in the field of solid-state physics, and the Dr. sc. nat. degree in the field of measurement of low temperatures from the Technical University Dresden, Dresden, Germany, in 1990.
From 1980 to 1990, he was with the Metrologi...View more
Physikalisch-Technisch Bundesanstalt, Brunswick, Germany
Harald Bothe was born in Goslar, Germany, in 1968. He studied communications engineering from the University of Applied Sciences, Braunschweig/Wolfenbüttel, Germany.
After his graduation, he was with the Physikalisch-Technischen Bundesanstalt, Braunschweig, Germany. There, he acts in the working group Impedance Measurement.
Harald Bothe was born in Goslar, Germany, in 1968. He studied communications engineering from the University of Applied Sciences, Braunschweig/Wolfenbüttel, Germany.
After his graduation, he was with the Physikalisch-Technischen Bundesanstalt, Braunschweig, Germany. There, he acts in the working group Impedance Measurement.View more
Physikalisch-Technisch Bundesanstalt, Berlin, Germany
Norbert Haft was born in Berlin, Germany, on April 17, 1956. He received the graduated Engineer degree in electrical engineering from the Friedrich Schiller University Jena, Jena, Germany.
From 1981 to 1990, he was with the Metrological Institute of East Germany, where he worked in the field of electrical resistance measurement. Since 1991, as a Member of the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin,...Show More
Norbert Haft was born in Berlin, Germany, on April 17, 1956. He received the graduated Engineer degree in electrical engineering from the Friedrich Schiller University Jena, Jena, Germany.
From 1981 to 1990, he was with the Metrological Institute of East Germany, where he worked in the field of electrical resistance measurement. Since 1991, as a Member of the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin,...View more
Physikalisch-Technisch Bundesanstalt, Brunswick, Germany
Jürgen Melcher was born in Gelsenkirchen, Germany, in 1957. He received the Dipl.-Ing. and Dr.-Ing. degrees from the Technical University of Aachen, Aachen, Germany, in 1984 and 1989, respectively.
From 1984 to 1989, he was engaged in research work concerning the dielectric properties of polymers. In 1989, he was with the Physikalisch-Technische Bundesanstalt, Braunschweig, Germany, to work on ac standard metrology at low ...Show More
Jürgen Melcher was born in Gelsenkirchen, Germany, in 1957. He received the Dipl.-Ing. and Dr.-Ing. degrees from the Technical University of Aachen, Aachen, Germany, in 1984 and 1989, respectively.
From 1984 to 1989, he was engaged in research work concerning the dielectric properties of polymers. In 1989, he was with the Physikalisch-Technische Bundesanstalt, Braunschweig, Germany, to work on ac standard metrology at low ...View more
Physikalisch-Technisch Bundesanstalt, Berlin, Germany
Bernd Fellmuth was born in Berlin, Germany, on June 25, 1953. He received the Dipl.-Phys. and Dr. rer. nat. degrees at the Humboldt-University zu Berlin, Berlin, Germany, in 1977 and 1980, respectively, in the field of solid-state physics, and the Dr. sc. nat. degree in the field of measurement of low temperatures from the Technical University Dresden, Dresden, Germany, in 1990.
From 1980 to 1990, he was with the Metrological Institute of East Germany, and since 1991, he has been with the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin, Germany, where he is currently the Head of the working group Fundamentals of Thermometry. His work has been concerned with precision temperature measurements, particularly fixed-point realisation and vapour-pressure and gas thermometry.
Bernd Fellmuth was born in Berlin, Germany, on June 25, 1953. He received the Dipl.-Phys. and Dr. rer. nat. degrees at the Humboldt-University zu Berlin, Berlin, Germany, in 1977 and 1980, respectively, in the field of solid-state physics, and the Dr. sc. nat. degree in the field of measurement of low temperatures from the Technical University Dresden, Dresden, Germany, in 1990.
From 1980 to 1990, he was with the Metrological Institute of East Germany, and since 1991, he has been with the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin, Germany, where he is currently the Head of the working group Fundamentals of Thermometry. His work has been concerned with precision temperature measurements, particularly fixed-point realisation and vapour-pressure and gas thermometry.View more
Physikalisch-Technisch Bundesanstalt, Brunswick, Germany
Harald Bothe was born in Goslar, Germany, in 1968. He studied communications engineering from the University of Applied Sciences, Braunschweig/Wolfenbüttel, Germany.
After his graduation, he was with the Physikalisch-Technischen Bundesanstalt, Braunschweig, Germany. There, he acts in the working group Impedance Measurement.
Harald Bothe was born in Goslar, Germany, in 1968. He studied communications engineering from the University of Applied Sciences, Braunschweig/Wolfenbüttel, Germany.
After his graduation, he was with the Physikalisch-Technischen Bundesanstalt, Braunschweig, Germany. There, he acts in the working group Impedance Measurement.View more
Physikalisch-Technisch Bundesanstalt, Berlin, Germany
Norbert Haft was born in Berlin, Germany, on April 17, 1956. He received the graduated Engineer degree in electrical engineering from the Friedrich Schiller University Jena, Jena, Germany.
From 1981 to 1990, he was with the Metrological Institute of East Germany, where he worked in the field of electrical resistance measurement. Since 1991, as a Member of the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin, Germany, he has been working on measurements of thickness of very thin layers by scanning electron microscopy, and in 1998, he was with the working group Fundamentals of Thermometry to perform particularly gas thermometry.
Norbert Haft was born in Berlin, Germany, on April 17, 1956. He received the graduated Engineer degree in electrical engineering from the Friedrich Schiller University Jena, Jena, Germany.
From 1981 to 1990, he was with the Metrological Institute of East Germany, where he worked in the field of electrical resistance measurement. Since 1991, as a Member of the Physikalisch-Technische Bundesanstalt, Institute Berlin, Berlin, Germany, he has been working on measurements of thickness of very thin layers by scanning electron microscopy, and in 1998, he was with the working group Fundamentals of Thermometry to perform particularly gas thermometry.View more
Physikalisch-Technisch Bundesanstalt, Brunswick, Germany
Jürgen Melcher was born in Gelsenkirchen, Germany, in 1957. He received the Dipl.-Ing. and Dr.-Ing. degrees from the Technical University of Aachen, Aachen, Germany, in 1984 and 1989, respectively.
From 1984 to 1989, he was engaged in research work concerning the dielectric properties of polymers. In 1989, he was with the Physikalisch-Technische Bundesanstalt, Braunschweig, Germany, to work on ac standard metrology at low frequency. Since 2006, he is the Head of the department Direct Current and Low Frequency.
Jürgen Melcher was born in Gelsenkirchen, Germany, in 1957. He received the Dipl.-Ing. and Dr.-Ing. degrees from the Technical University of Aachen, Aachen, Germany, in 1984 and 1989, respectively.
From 1984 to 1989, he was engaged in research work concerning the dielectric properties of polymers. In 1989, he was with the Physikalisch-Technische Bundesanstalt, Braunschweig, Germany, to work on ac standard metrology at low frequency. Since 2006, he is the Head of the department Direct Current and Low Frequency.View more