high-impedance voltmeter

high-impedance voltmeter

[′hī im¦pēd·əns ′vōlt‚mēd·ər]
(electricity)
A voltage-measuring device with a high-impedance input to reduce load on the unit under test; a vacuum-tube voltmeter is one type.
References in periodicals archive ?
Then the reference electrode and the reinforcement mesh were connected to the high-impedance voltmeter, and the reference electrode was placed on the surface of the concrete.
For example, the current leakage within a shielded cable driving a high-impedance voltmeter can be minimized through guarding.

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