Internet http://www.kikusui.co.jp / Measurement of fuel cell impedance characteristics using AC impedance measurementCapability to measure cells of up to 20 V in the range of 10 mHz to 10 kHzTwo constant current mode ranges - 30 A and 5 A - supported as the load rating Load current setting resolutions of 1 mA (30 A range) and 0.1 mA (5 A range) with maximum power consumption of 60 W Various protection functionsEquipped with GPIB, RS-232C and USB interfaces as standard >

Equipped with GPIB, RS-232C and USB interfaces as standard Application software included The impedance meter KFM2030 is intended to enable the impedance characteristics of a fuel cell to be measured easily through the use of the AC impedance measurement method. Using the application software that comes with it, the meter can obtain impedance values at different frequencies by means of AC impedance measurement and display the obtained values in a Cole-Cole plot. With a low-power DC load (60 W) built in it, KFM2030 supports fuel cell load testing at up to 20 V, at up to 30 A. Impedance of cells...

There are several impedance measurement methods, including:(1) AC impedance measurement, (2) current interrupt method, (3) fast Fourier transform, (4) litharge method, (5) impedance bridging, and (6) oscilloscope measurement.Of these, AC impedance measurement is the most popular method. To measure large currents, the current interrupt method has been the technique of choice. This method, however, is often problematic in terms of data reproducibility and accuracy. The AC impedance measurement method applies alternate current-induced vibration to the device under test (fuel cell), calculates the...