The temperature is measured with an integrated temperature sensor AD590, amplified and zeroed through an analog circuit, displayed directly by a digital voltmeter.

Plessey describes EPIC as essentially a very sensitive, contactless digital voltmeter capable of measuring millivolt changes in electric fields.

DC millivolt table is commonly used measuring instruments, the use of digital manipulation can make a more intuitive, and fast response, is an ideal measurement tool millivolt range.