Improved Field Meter for Electrostatic Measurements

Abstract

An instrument system for the measurement of electrostatic fields is described. The use of more than 40 dB of negative feedback in the amplifier results in a sensitivity stable to within 1%. Careful attention to grounding and to surface preparation in the transducer head results in a zero level stable to within 1 V/m in ideal conditions. The effect of atmospheric variations in limiting the usable sensitivity is demonstrated.