The wall mounted flow meter comes with a voltage balance of several pulse treatment. It has a patent technology design that makes it the new general type of jet lag multifunction meter. The meter comes with a big LCD that shows useful information making it easy to operate. It shows the total flow, instant flow, flow velocity, and working conditions.
This meter is lightweight making it easy to carry. A remarkable thing about this flow meter is that its impact resistance. You don’t have to worry about damaging the meter when it falls accidentally. This ultrasonic flow meter has a waterproof and dust resistant body that makes it perfect for using in all types of environments.
When it comes to installation, there are different ways to install it. You can choose the one that suits you the best. This makes installation easy and quick. A wonderful thing about this flow meter is that it works great near transverters. It features the patented balance lower voltage multi-pulse ultrasonic igniting.
Additionally, this ultrasonic flow meter has 4 flow totalizers with built-in data logger and date totalizers. It has 0.5% linearity and 0.2% repeatability. This is perfect for industrial environments because of its continuous measurements. It doesn’t have a large concentration of gas or suspended particles. This flow meter provides uniform liquid heat and flow. It can work for all type so fluid including water, oil, sewage with small particle content, and many more. The ultrasonic is IP certified flow meter. This means it is safe to use in all types of environment.
★ Several type transducers for selection, measuring pipe size is from DN15mm to DN6000mm
★ Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability.
★ Powerful Recording Function, record the totalizer data of the last 64 days/64 monthes/5 years.
Principle
The WSL-CGB Series transit-time 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 can be mounted in V-method where the sound transverses the pipe twice, or 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 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, show as follows:
Where
θ is the include angle to the flow direction
M is the travel times of the ultrasonic beam
D is the pipe diameter
Tup is the time for the beam from upstream transducer to the downstream one
Tdown is the time for the beam from downstream transducer to the upstream one
ΔT=Tup –Tdown
Optional transducer
★ TS-1 clamp-on type transducer, pipe size from DN15-100mm
★ TM-1 clamp-on type transducer, pipe size from DN50-1000mm
★ TL-1 clamp-on type transducer, pipe size from DN300-6000mm
★ HTS-1 clamp-on type transducer, pipe size from DN15-100mm
★ HTM-1 clamp-on type transducer, pipe size from DN50-1000mm
Typical application
The wall-mounting flow meter can be applied to a wide range of pipe flow measurements. Applicable liquids include pure liquids as well as liquid with small quantity of tiny particles.
Examples are:
★ Water (hot water, chilled water, city water, sea water, waste water, etc.);
LCD with backlight, display accumulated flow/heat, instantaneous flow/heat, velocity, time etc.
Output
Analogue output: 4-20mA or 0-20mA current output. Impedance 0∼1kW. Accuracy 0.1%.
OCT output: Frequency signal (1~9999HZ)
Relay output: over 20 source signal (no signal, reverse flow etc.)
RS485 serial port
Input
Three analogue input
Three-wire PT100 resistor input (optional)
Other functions
Automatically record the totaliser data of the last 64 days / 64 months / 5 years;
The power-on time and corresponding flow rate of the last 64 power on and off events. Allow manual or automatic flow loss compensation
The instrument working status of the last 64 days
pipe
material
Steel, stainless steel, cast iron, cement pipe, copper, PVC, aluminum, FRP etc. Liner is allowed
Size
15-6000mm
Straight pipe section
In the upstream it must be beyond 10D, in the downstream it must be beyond 5D, in the upstream the length must be beyond 30D from the access of the pump. (D stands for pipe diameter)
Liquid
Types
Water, sea water, industrial sewage, acid & alkali liquid, alcohol, beer, all kinds of oils which can transmit ultrasonic single uniform liquid
