The method of temperature compensation of the single-phase power meter

The present invention discloses a temperature compensation method of a single-phase meter, the process first at normal temperature meter calibrated to give a current value and each temperature point meter measured while changing the temperature, then through the meter measured at room temperature current meter measured the changed current value and the temperature calculation at this temperature current, power trim scaling factor, and finally the use of trim factor and a correction table calculated original current ratio value and the power difference register ratio difference register value calculated difference between the new current value register and the register power ratio at the same temperature, and written to the measurement chip. Based on the above, the power factor 0.5L, see the corresponding power error at each temperature point, and calculates the angle difference between this temperature range trim compensation factor, a value of the original angle difference register at ordinary temperature calculated angle difference register at this temperature the new value. So as to eliminate a measurement error caused due to variation in the current amplitude and phase changes caused by temperature.