The difference between ultrasonic water meter and mechanical water meter

一、Principle

1. The ultrasonic water meter adopts the pure electronic ultrasonic measurement principle, and adopts the time difference method to measure the flow, that is, an ultrasonic transducer is installed in the upstream and downstream of the measurement channel (pipe section) for mutual transmission and reception of ultrasonic signals.

Since the ultrasonic signal and the water flow signal are superimposed, the propagation speed of the sound wave is different in the forward flow and the reverse flow, so the operation time of the ultrasonic signal emitted by different transducers in the water is different. By measuring the time difference, the fluid can be calculated. The flow rate, and then converted into flow, so as to achieve flow measurement.

Ultrasonic water meter has high measurement accuracy and wide range ratio. The actual water consumption can also be accurately measured in the case of low flow rate of the pipe network. R250, R400

二、Structure

1. There are no mechanical movable parts such as impellers in the pipe section of the ultrasonic water meter, so there is no pressure loss and no wear.

2. The mechanical water meter has components such as impeller and counter, which will cause certain pressure loss and wear, which will affect the measurement accuracy.

三、 Lifespan

1. The ultrasonic water meter is powered by lithium battery, and the battery life is more than 10 years, which effectively guarantees the service life of the product.

2. The mechanical water meter does not need an external power source, but because the water flow wears the impeller, the service life is generally 5-6 years.