Patent ID: 7508190

Claim:
An electrical panel metering device comprising: a housing including a front face panel configured to facilitate mounting of the panel metering device in a cut-out of an indication panel; at least one sensor configured for measuring an electrical parameter; at least one analog-to-digital converter coupled to the at least one sensor for converting the measured electrical parameter to a digital signal; a display disposed on the front face panel of the housing for continuously displaying at least one electrical parameter; a processor configured to receive the digital signal and calculate an amount of energy consumed for revenue metering; and a test pulse circuit configured to receive the calculated amount and generate a plurality of pulses equal to the calculated amount, wherein each of the plurality of pulses is equal to a predetermined amount of energy accumulated, wherein the test pulse circuit includes an LED disposed on the front face panel of the housing to generate infrared pulses from the plurality of pulses for verifying the accuracy of the panel metering device with an external reference standard device.