PROBE ASSEMBLY FOR AN ELECTRIC METER

摘要

A probe assembly for use with an electrical voltmeter-ammeter, to adapt the meter to read electrical resistance, is provided with a pair of probe electrodes connected respectively to separate, flexible, insulated electrical conductors that are coupled to a common multi-terminal plug housing. Terminals mounted in the plug housing are arranged to cooperate with a plurality of terminals mounted on a terminal board in a meter. The probe assembly is further characterized by incorporating a fuse and a battery electrically connected in series with one of the probe electrodes and the terminal to which it is connected by a flexible conductor. A potentiometer is connected in series with one of the flexible conductors while a resistor connected between the flexible conductors to enable a meter to be adjusted for full scale deflection when it is connected to the probe assembly while the probe electrodes are in engagement with one another.