Electrostatic voltmeters for non-contact voltage measurement

The idea behind an electrostatic voltmeter is voltage measurement without charge transfer or measured source loading.

For instance, being able to accurately measure the surface potential (voltage) on any kind of material surface without physical contact, therefore means no charge transfer or loading of the material/surface is required in many applications.

In these sensitive applications, it’s not possible to make accurate voltage measurements using conventional contacting voltmeters because they require charge transfer to the voltmeter, which causes loading and modification of the source voltage. For example, when measuring the voltage distribution on a dielectric surface, any measurement technique that requires charge transfer, no matter how small, will modify or destroy the actual data.

Our electrostatic voltmeters deliver DC-stable voltage measurement without having to touch the test surface, meaning it’s possible to measure any surface, even moving surfaces, with no charge transfer from the surface. This translates to no modification of the measured voltage.