This system consists of the AC impedance test system model 350 fuel cell monitor, system controller, software and
all necessary hardware to interface with an ElectroChem fuel cell test station.
The FCM350 Fuel Cell Monitor uses an electronic load to control both DC and AC current flow through the fuel
cell. The load is connected to the control electronics which applies a sine wave to the load’s analog input and
measures the resulting cell current and voltage.
10 µHz to 20 kHz
10 µΩ to 50 Ω
max. cell potential:
two operating modes
constant AC current signal superimposed on a fixed
DC current is constant, AC current level is controlled
to produce a constant AC voltage at the cell
The voltage measurement can be made across the entire fuel cell or using probes, the impedance of
conductors, electrolyte, the cathode, and the anode can be measured separately.