Structurally, smart electricity meters can be broadly categorized into two main types: Electromechanical and fully electronic.
Electromechanical Type
The electromechanical type involves attaching specific components to a standard mechanical electricity meter to enable it to perform requisite functions while simultaneously keeping costs low and facilitating easy installation. Generally, this design approach entails adding sensing devices-without altering the meter's original physical structure or deviating from national metrology standards-to transform it into a smart meter capable of generating electrical pulse outputs alongside mechanical readings. This ensures synchronization between electronic and mechanical counting, and its measurement accuracy is typically no lower than that of traditional mechanical meters. This design leverages the mature technology of existing inductive meters and is frequently employed in the retrofitting of older meters.
Fully Electronic Type
The fully electronic type, conversely, utilizes electronic components-centered around integrated circuits-for every stage from measurement to data processing, thereby eliminating the mechanical parts that have historically been standard in electricity meters. Compared to electromechanical meters, this type offers numerous advantages: A more compact size, enhanced reliability, greater accuracy, reduced power consumption, and significantly improved manufacturing processes-including the ability to be produced outside of traditional, specialized electricity meter factories. Ultimately, this fully electronic design is poised to replace all metering devices that incorporate mechanical components.