Among many new energy sources, gas is one of the energy sources that every household needs to use every day. Consumption occurs during use, and gas meters are used here. Gas meter with automatic cumulative function, make it easier for people to know how much gas and how much it costs to pay.
Hall element is mainly used in gas meter flow statistics in this part of the gas meter as most of them are battery-powered so the internal general use of micro-power Hall element. Gas meter meter table with a small magnet, Hall element is fixed not far from the magnet. When the count meter gear rotation, the magnet will also rotate, when the magnet near the Hall, Hall will be fed back the signal in order to achieve counting.
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