The main unit is suitable for wall mounting, used in the most situations with no special requirements. Optional clamp-on transducers, measuring range from DN32-DN6000mm
Upstream and downstream distance
Working Principle of Transit-Time Technology
For the measurement, two ultrasonic pulses are sent through the medium, one in a flow direction, and the other against it. The transducers are alternatively working as emitter and receiver.
The transit time of the ultrasonic signal propagating in flow direction is shorter than the transit time of the signal propagating against the flow direction.
The transit-time difference Δt is measured and allows the determination of the average flow velocity on the propagation path of the ultrasonic signals.
A profile correction is performed to obtain the average flow velocity on the cross-section of the pipe, which is proportional to the volume flow.
The Flowmasonic WUF100 Series transit time clamp-on flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific distance from each other.
The transducers of Flowmasonic WUF100 CF flow meter can be mounted in V-method where the sound transverses the pipe twice, or the W-method where the sound transverses the pipe four times, or in Z-method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once.
This selection of the mounting method depends on pipe and liquid characteristics. The Flowmasonic series WUF100 flow meter operates by alternately transmitting and receiving a frequency modulated burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers.
The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe.
Another article :
Non-Invasive, Clamp-on Transducers
Since ultrasounds propagate in solids, the transducers can be mounted onto the pipe. The measurement is therefore non-invasive, and no cutting of pipes is necessary for the installation of the transducers.
With just 3 sets of transducers, pipes ranging from 15mm to 6000mm can be covered, the ownership cost doesn’t increase as the pipe size increases, which is the decisive cost-saving factor as compared to traditional flow meters.
read more…….. FLOWMASONIC SERIES WUF 100CF
Flowmasonic Series Ultrasonic Flow Meter
- WUF 100J Flowmasonic Portable Flowmeter
- WUF 100CF Clamp-on Fix Ultrasonic Flow Meter
- WUF 100IR In-Line Remote Ultrasonic Flow Meter