KP-UD10Series

Product Overview

KPC series ultrasonic flowmeter uses the principle of low voltage and multi-pulse time difference, and adopts high-precision and ultra-stable double-balance signal checking and transmitting, differential reception digital detection technology to measure the sound wave transmission time in the direction of forward and counter-current, and calculates the flow rate according to the time difference. It has the characteristics of good stability, small zero drift, high measurement accuracy, wide range ratio, and strong anti-interference. When an ultrasonic beam propagates in a liquid, the flow of the liquid will cause a small change in the propagation time, which is proportional to the flow rate of the liquid, and at zero flow, the time required for both sensors to emit and receive the sound wave is exactly the same (the only technology that can actually measure zero flow); When the medium flows, the sound wave transmission time in the countercurrent direction is greater than that in the water flow direction. The relationship conforms to the following expression:
V = frac{MD}{sin2theta} times frac{Delta T}{Tup cdot Tdown}
F = 900 times pi times D^{2} times V
Thereinto:

– theta is the angle between the sound beam and the direction of the liquid flow
– M is the number of times the beam travels in a straight line through the liquid
– D is the inner diameter of the pipe
– Tup is the propagation time of the sound beam in the positive direction
– Tdown is the propagation time of the beam in the opposite direction
– Delta T = Tup – Tdown Time Difference
– F is the instantaneous flow rate (in cubic meters per hour)
– D is the inner diameter of the pipe (unit: meters)
– V is the flow rate in meters/sec