TrueData-EIS electrochemical impedance spectrometer is a high-capacity diagnostic tool to determine the impedance of fuel cells, membranes, MEAs, single cells, stacks, batteries and super capacitors. It uses a non-invasive method and allows the characterization of components during operation under different load conditions. The test item is stimulated with a small sinusoidal signal. The resulting signal response is measured with magnitude of impedance and phase over a larger frequency range.
The TrueData-EIS impedance analyzer is based on the single-sine-method and enables, together with the used 32 bit processor technology, high precision and an easy integration in automated test systems for fuel cells and batteries. Typically, the TrueData-EIS is applied together with the electronic load TrueData-LOAD. In addition, the TrueData-EIS is compatible with various other electronic loads, potentiostats and galvanostats.
The FuelCon TrueData-EIS allows impedance spectrums in a frequency range, which is particularyly interesting for the fuel cell development and manufactoring: from 200 µHz up to 100 kHz with a maximum DC current of 1,000 A. The complex circuitry design and sophisticated calibration performance ensure high reproducibility of measured data within the typically very low impedance values of fuel cells. A display with four keys allows a comfortable operation of the device.
Its optimum performance is achieved when using the TrueData-EIS combined with the FuelCon Evaluator test station and the software TestWork. While measuring, the test results are displayed as a frequency response diagram or Nyquist diagram. At the same time, the parameters of fuel cell operation are specified on-line. This allows the fully automated recording of the impedance spectrum under different, reproducibly adjusted operating points for single cells, short stacks and complete cell stacks. Therefore it is ideal for material screening.
The optional Multiplex-Module TrueData-MUX enables the easy and cost-optimized realization of multi-channel measurement. The TrueData-MUX is available with 12, 24 and 36 channels.
|Impedance range||5 µΩ to 15 Ω|
200 µHz to 10 kHz,
± 1 %
AC current amplitude
up to 2.5 A
AC current accuracy
± 1 %
DC voltage maximum
10 V, 35 V, 70 V, 100 V
DC current maximum
100 A, 250 A, 500 A, 1,000 A
Current (Galvanostat), Voltage (Potentiostat), Power, Resistance
Phase angle accuracy
± 1 °
± 1 %
DC drift compensation
110 - 230 V AC, 100 W
19” housing, 3 HE
485 mm x 135 mm x 440 mm (19” x 5.3” x 17.3”)
|10 kHz||50 kHz||100 kHz|
|100 A||EIS 100 A/ 10 V/50 kHz (23001200)|
EIS 100 A/ 35 V/50 kHz (23001203)
EIS 100 A/ 70 V/50 kHz (23001205)
EIS 100 A/100 V/50 kHz (23001207)
|EIS 100 A/10 V/100 kHz (23001300)|
EIS 100 A/35 V/100 kHz (23001303)
|250 A||EIS 250 A/ 10 V/50 kHz (23001210)|
EIS 250 A/ 35 V/50 kHz (23001213)
EIS 250 A/ 70 V/50 kHz (23001215)
EIS 250 A/100 V/50 kHz (23001217)
|500 A||EIS 500 A/ 10 V/10 kHz (23001130)|
EIS 500 A/ 35 V/10 kHz (23001133)
EIS 500 A/ 70 V/10 kHz (23001135)
EIS 500 A/100 V/10 kHz (23001137)
|EIS 500 A/ 10 V/50 kHz (23001230)|
EIS 500 A/ 35 V/50 kHz (23001233)
EIS 500 A/ 70 V/50 kHz (23001235)
EIS 500 A/100 V/50 kHz (23001237)
|1,000A||EIS 1,000 A/ 10 V/10 kHz (23001150)|
EIS 1,000 A/ 35 V/10 kHz (23001153)
EIS 1,000 A/ 70 V/10 kHz (23001155)
EIS 1,000 A/100 V/10 kHz (23001157)
The device will be operated with 4 keys and a graphical display. The measured impedance values are presented in a table as shown.
At the top of the display a state line shows the progress and the actual state of the impedance measurement.
The working points with the DC-values are presented in a separate display. The actual DC mode (current [galvanostat], voltage [potentiostat], power) is shown with the grey set point value to the left part of the display.
The results of the frequency sweep (impedance spectrum) is presented as Nyuist diagram or frequency response plot.
The configuration of the device is supported by a clear tree structure of the parameters.
The TrueData-MUX multiplexer, togehter with TrueData-EIS, allows the multi channel measurement of impedances. Typical applications are measurements of the impedances of the single cells inside a fuel cell stack or the impedances of the elements of a battery.
TrueData-MUX is available in three groups of 12 channels per group for either 12, 24 or 36 channel configurations. Each group has its own connector and LEDs for state information.