PRODYN’s AD sensors electric field sensors are small to medium sized, free-space and surface, high frequency sensors that measure time rate of change of electric displacement. Probes with sensitive areas of up to 1m² or upper 3dB points of 28GHz are available.

To aid sizing of the probes a 'ready reckoner' has been provided to help you estimate the output of a device based on rise time and field strengths D-DOT output calculator

The voltage output from the probe is proportional to the RATE OF CHANGE of the incident electric field. Examples of how to interpret the output from these sensors can be found here:

Further reading on the devices can be found here:

AD-20(R)	AD-40(R)