MU300 Rev1.0 Oct20
Page 7 of 54
2.2
Measuring Principle
This series of ultrasonic flowmeter is an industrial time-difference type ultrasonic flowmeter. It applies the latest
industrial-level PFGA 700-thousand-
gate-array chip
, which extremely improves the signal sampling frequency and
bubble tolerance rate; the self-developed TGA technology makes it be capable of dealing with more complex
logic and calculation to provide more accurate and faster measurements, and ensures the flowmeter could
endure non-continuous bubbles or impurities within 5 sec. In addition, it could be installed and operated in a
convenient way with no need to break the pipe or cut off the fluid or stop work.
Time-difference type ultrasonic measurement indicates determining the fluid flow along the average velocity
with the time difference between two ultrasonic signals transmitting downstream or upstream in the same
stroke.
2.3
Application Scope
In which,
v
Fluid velocity
M
Ultrasonic reflections
D
Pipe diameter
θ
Included angle between ultrasound signal and fluid
Tup
Time that downstream transducer sends signal to
upstream
Tdown
Time that upstream transducer sends signal to
downstream
△
T =Tup-Tdown
It mainly applies for measuring the flow of homogeneous medium fluid in the following fields:
Domestic wastewater flow measurement, crude oil flow measurement, cementing slurry flow
measurement, oily sewage flow measurement in oil fields, water injection flow measurement in oil wells,
raw water flow measurement in rivers and reservoirs, tap water flow measurement, process flow
measurement of petrochemical products, industrial circulating water flow measurement, water
consumption measurement in production, mineral slurry flow measurement, pulp flow measurement,
chemical flow measurement, circulated cooling water flow measurement, generating coil cooling water
flow measurement (super small diameter), juice flow measurement, milk flow measurement, and so on.
