How to Measure Insulating Material Resistivity

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Femto / Picoammeters and Electrometers
+ Femto / Picoammeters and Electrometers
Femto / Picoammeters and Electrometers
+ Femto / Picoammeters and Electrometers

Measure Insulating Material Resistivity Using an Electrometer

Resistivity characterization of insulating materials requires applying controlled high voltages and measuring extremely low leakage currents through or across the material under test. The test setup must support high-voltage sourcing together with ultra-low current measurement capability to accurately characterize both surface and volume resistivity across a wide resistance range.

The measurement process involves applying a controlled DC voltage and measuring the resulting leakage current after electrification to characterize both surface and volume resistivity. Accurate results depend on minimizing leakage current effects, controlling environmental conditions, and using guarded measurement techniques to obtain stable and repeatable resistivity measurements.

Insulating Material Resistivity Measurement Solution

Measuring surface and volume resistivity requires instrumentation capable of sourcing high voltages while accurately measuring ultra-low currents for reliable material characterization. The Keysight B2987C electrometers provide current measurement resolution down to 10 attoamperes (aA) together with built-in voltage sourcing up to 1000 V, enabling precise resistivity characterization across a wide resistance range. When used with the Keysight N1424 resistivity cell, engineers can perform standardized surface and volume resistivity measurements while monitoring resistivity changes over time after electrification. Built-in timer-based triggering, graphical trend monitoring, and automated resistivity calculations further simplify data analysis and improve measurement repeatability. Together, these capabilities support accurate and repeatable insulating material characterization for high-sensitivity electrical measurement applications.
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