asurement accuracy. Ultrasonic water meters ensure accurate metering accuracy throughout the life cycle and do not change over time.4. Applicable water quality comparison: Ordinary mechanical water meter can adapt to iron filings, rust and other impurities, but it can not have soft impurities such as hemp. Ultrasonic water meters are completely immune to interference from impurities, chemicals and magnetic substances. It can be said that they are fully adapted to the current water quality.5. Eco