What are the advantages and disadvantages of ultrasonic flowmeter, mechanical water meter and electromagnetic flowmeter?
Stability, general electromagnetic flowmeter is best, followed by water meter, while the worst ultrasonic
Price, ultrasonic and electromagnetic flowmeter compared to the general small diameter electromagnetic flowmeter has advantages, big diameter is ultrasonic advantage, and mechanical water meter is the cheapest
Accuracy, electromagnetic flowmeter highest, generally can reach 0.5, ultrasonic flowmeter next, generally 1, and mechanical water meter accuracy is the worst
Measuring medium, mechanical water meter usually only measure tap water, electromagnetic flowmeter measuring medium must be conductive, and ultrasonic measurement range is the most wide
Installation and maintenance of ultrasonic flowmeter is the most convenient, no process parking, and the other two have to stop to install
