The EIS-Meter is an impedance spectrometer that can be used for DUTs with very small electrical impedances in the microohm [µΩ] to milliohm range[mΩ] such as batteries and fuel cells or electrolyzers.
The basis for the highly accurate impedance spectra in this low impedance range is a novel modulation current source that generates modulation currents up to ±50 A and thus enables very good measurement results taking into account the dynamic range.


The EIS-Meter can be used in its different expansion stages for a wide range of applications.

The smallest version measures up to a DUT voltage of 10 V and is therefore mainly used for the investigation of single cells of batteries, fuel cells or electrolyzers. The ever larger active areas lead to ever lower electrical impedances. The EIS meter meets this challenge and provides highly accurate impedance spectra. For DUTs up to 10 V,  the EIS meter is available as a desktop setup or in a laboratory version.

For DUTs with higher voltages, the EIS meter is designed in a 19" rack. It can be excellently integrated into test benches and, with the help of its automation interfaces, into the control and automation system. This allows the measurement of entire stacks up to 1.000 V.


Parameter Value
Frequency range 1 mHz to 20 kHz
Impedance accuracy ± 0,5 %
Phase angle accuracy ± 1°
Modulation current (AC) ±10 A, ±30 A, ±50 A
Maximum DC Voltage 10 V,  100 V, 600 V, 1.000V
Number of synchronous channels Configurable
Maximum DC Current 100 A, 500 A, 1.000 A, 2.000A
Display Touch
Remote control via browser
Interfaces Ethernet, RS232
Interfaces optional EtherCAT
Setup calibration Yes
Funktions Nyquist Plot, Bode Plot