Keithley Nano Current Source and Voltmeter

Measurement of conductivity requires a stable current source and a high precision voltage measuring device. Such a device is used to evaluate the surface as well as the bulk conductivity of the bi-polar plates used as gas feed as well as current collector in the fuel cell stack. These parameters are also used for quality control of the bipolar plates when made from composites. The Keithley digital source meter and the Keithley Nanovolt meter combination with data acquisition capabilities serves this purpose.