C10.1 Integrated Differential Transformer on a Single Printed Circuit Board
- Event
- SMSI 2021
2021-05-03 - 2021-05-06
digital - Band
- SMSI 2021 - Sensors and Instrumentation
- Chapter
- C10 Magnetic Sensors
- Author(s)
- M. Berger, A. Zygmanowski, S. Zimmermann - Leibniz University Hannover, Hannover (Germany)
- Pages
- 220 - 221
- DOI
- 10.5162/SMSI2021/C10.1
- ISBN
- 978-3-9819376-4-0
- Price
- free
Abstract
The electrical and dielectric properties of samples can be used for various sensing tasks. For specific applications, e.g. continuous in-line measurement of the blood conductivity as a measure of sodium concentration in the blood during dialysis treatment or the determination of the polarizability as a measure of biomass in disposable bioreactors, a contactless measurement method is essential to avoid any contamination of the sample introduced by the sensor. One promising approach is a sensing concept based on a differential transformer [1–3]. In this work, we present a new integrated differential transformer structured on a single printed circuit board (PCB). The differential transformer is characterized with sodium chloride solutions and compared to a highly sensitive but larger multi-layer differential transformer from an earlier work [4].