P8.6 - Demonstrating Fast Current Measurement from Femtoamperes to Nanoamperes with an Ultra-Low Noise Current Amplifier
- 15. Dresdner Sensor-Symposium 2021
2021-12-06 - 2021-12-08
- P8. Neuartige Sensormaterialien und -technologien
- C. Wendt, A. Bohnhorst, S. Zimmermann, A. Kirk - Leibniz University Hannover, Hannover/D
- 276 - 279
In a large number of sensor principles, the physical or chemical property being analysed is converted into an electric current, a charge, a resistance or a capacitance, whereby in the last two cases an electric current or a charge needs to be measured. Especially ionization-based sensors such as photoionization detectors (PID) or flame ionization detectors (FID) generating currents ranging from femto- to nanoamperes. In all these cases, a current amplifier converting the electric current into a measurable voltage forms the link between the sensor and the rest of the measurement system.