Dwyer UXF2 - Manual (Page 11)

- 1 -
1. OUTLINE OF PRODUCT
1.1. Outline
This flowmeter is a clamp-on type ultrasonic flowmeter for permanent use based on transit time measuring methods. The
UXF2 is ideal for clean liquids containing no air bubbles such as pure water. The easy-to-use compact and
lightweight design is intended for integration into mechanical devices.
The flowmeter is applicable to small and medium size pipes of diameter range from 25mm to 600mm providing superior cost
performance.
1.1.1. Measuring principle
Measuring principle
Ultrasonic pulses are propagated diagonally from the upstream and downstream sides, and the time difference caused by the
flow is detected to provide the flow rate measurement.
Detector
Flow velocity
θ
t1
t2
D Flow
transmitter
Output signal
Upstream sensor
Downstream sensor
Mounting the detector
Ultrasonic transducer Pipe
Plastic wedge
Lining
Configuration diagram
(1) Single-path system (V method)
Detector
Signal cable
Power supply
4 to 20mA
DC
Contact
Flow
transmitter
(2) Single-path system (Z method)
Detector
Power supply
4 to 20mA
DC
Contact
Flow
transmitter
Signal cable
(3) When synchronizing
Power supply
Power supply
Detector
Signal cable
Signal cable
4 to 20mA
DC
Contact
(master)
(slave)
Flow
transmitter
Flow
transmitter
Detector
Synchronizing
signal wiring
4 to 20mA
DC
Contact
BULLETIN F-70