PM9109BF

The SAMES monochip single phase bidirectional kilowatt hour metering module, the PM9109BF, provides all the required metering functions including energy measurement,  a 7 digit LCD driver, a tariff selection facility, an optical port as well as a pulse output for calibration purposes.

Energy consumption of PM9109BF is determined by the power measurement being integrated over time.

This method of calculation PM9109BF takes the power factor into account.

This application of PM9109BF utilises the SAMES SA9109BFA monochip single phase bidirectional kilowatt hour metering IC for energy measurement.

As a safety measure, this application shows the current sensor connected to the neutral line. In practice the live line may be used for current sensing, provided that the supply connections (MAINS) are reversed on the module.