Modern electrometers A modern electrometer is a highly sensitive electronic voltmeter whose input impedance is so high that the current flowing into it can be considered, for most practical purposes, to be zero. The actual value of input resistance for modern electronic electrometers is around 1014Ω, compared to around 1010Ω for nanovoltmeters.Keithley, Making precision low current and high resistance measurements, "A greater measure of confidence" brochure, 2011, page 8 Owing to the extremely high input impedance, special design considerations (such as driven shields and special insulation materials) must be applied to avoid leakage current.
modern electrometers a modern electrometer is a highly sensitive electronic voltmeter whose input impedance is so high that the current flowing into it can be considered for most practical purposes to be zero the actual value of input resistance for modern electronic electrometers is around 1014ω compared to around 1010ω for nanovoltmeterskeithley making precision low current and high resistance measurements "a greater measure of confidence" brochure 2011 page 8 owing to the extremely high input impedance special design considerations (such as driven shields and special insulation materials) must be applied to avoid leakage current