How to express the flow point of the ultrasonic water meter and what does it mean?
The flow point of the ultrasonic water meter has the same meaning as the flow point of the ordinary mechanical water meter. They are Q1, Q2, Q3, and Q4 stipulated by the latest national standards. The following is what they mean:
Minimum flow Q1: The minimum flow that requires the indication of the water meter to meet the maximum allowable error. When the water flow through the water meter is less than the minimum flow rate, the pointer of the water meter may still rotate (when the flow rate is less than the starting flow rate, the pointer of the water meter cannot rotate), but at this time, the error of the water meter may be very large, and the water meter is inaccurate ; Boundary flow Q2: Appears between the common flow Q3 and the minimum flow Q1, and divides the flow range into two zones, "high zone" and "low zone", each with a specific maximum allowable error. Common flow rate Q3: The maximum flow rate under rated working conditions, under this flow rate, the water meter should work normally and meet the maximum allowable error requirements. Overload flow: The water meter is required to meet the maximum allowable error requirements in a short period of time, and then the maximum flow rate that can maintain the metering characteristics under rated operating conditions. The turndown ratio R is the ratio of the normal flow rate Q3 and the minimum flow rate Q1.
The above is the relevant introduction of the ultrasonic water meter flow point. Sh-meters specializes in the production of ultrasonic water meters of various calibers. If you are interested in our products, please leave a message online or call us.