open channel flowmeter, ultrasonic flow meters for river volumetric flow measurement, irrigation tunnel

Descriptions:

The ultrasonic flowmeters are commonly applied to measure the velocity of liquids that allow ultrasonic waves to pass, such as water, molten sulfur, cryogenic liquids, and chemicals. Transit time designs are also available to measure gas and vapor flow. Be careful because fluids that do not pass ultrasonic energy, such as many types of slurry, limit the penetration of ultrasonic waves into the fluid. In Doppler ultrasonic flowmeters, opaque fluids can limit ultrasonic wave penetration too near the pipe wall, which can degrade accuracy and/or cause the flowmeter to fail to measure. Transit time ultrasonic flowmeters can fail to operate when an opaque fluid weakens the ultrasonic wave to such an extent that the wave does not reach the receiver.

The main function characteristics:

• With a fully independent intellectual property rights.
• Has wide range of temperature compensation and original ERD interference intelligent identification system, measurement data stability, high precision.
• Six groups flow condition all data sending 485 serial ports output, PC directly receive, decimal shows, the convenient user record and read archived.
• Original "fluid flow correction system" that flow coefficient according to slot size and level to be automatic operation weir and timing compensation.
• The blackout time time, the year/month/day/when/points/SEC, flow data, using the ferroelectric double backup storage 10 years off.
• Original "measuring tank jam recognition alarm system" can detect liquid slag quality measurement slot throat and obstruction caused by measurement.
• Precise date determined when the calendar clock Settings, display and cooperate with the memo and time axis to file information records.
• Has 4~20 mA three wire system, RS485, switch quantity and so on many kinds of signal output function selection.
• Using intelligent measuring high, digital calibration, the user installation calibration simple and quick.
• The ultrasonic non-contact measurement with no moving parts, flow without components within, no block sensor fault hidden trouble.

How to use

The velocity of the solid particles in slurry can be different than its liquid carrier fluid. Be careful applying ultrasonic technology when the solid particles can become concentrated in one part of the flowing stream, such as in a horizontal pipe flowing at a relatively low velocity. Be careful when applying Doppler ultrasonic flowmeters in slurry applications because the solid particles can produce strong signals that can cause the Doppler flowmeter to measure the velocity of the solids and not the velocity of the liquid.

For transit time ultrasonic flowmeters, be sure that the fluid can adequately conduct ultrasonic waves, because the flowmeter will not measure when the ultrasonic waves cannot penetrate the flow stream between the transducers. Similarly, ultrasonic waves must be able to penetrate the fluid for Doppler flowmeters to operate accurately. When the fluid is relatively opaque and does not penetrate the fluid, Doppler flowmeters tend to measure the velocity of the fluid at or near the pipe wall, which can cause significant measurement error and/or cause the flowmeter to fail.

Technical parameters

• Applicable weir: Right angled triangle weir:The size of the opening 500mm
• Rectangular weir:The size of the opening 250mm,500mm,750mm,1000mm
• Bashir slot: Larynx way width: 25mm,51mm,76mm,152mm,228mm
• Flow range:according to weir/flume size
• Function characteris tics: data storage 1 year, can be arbitrary time of the inquiry
• Flow precision: 1~5% F·S
• Level range:2m
• Level precision:±0.25% F·S (at times, and the blind process ℃)
• Probe blind area:≤300mm (at 25 ℃)
• Output signal:4~20 mA +RS485
• Showing the way:16 LCD display,
• Among them:Four level height,Four transient flow,Eight of the accumulative total flow,16 the calendar clock (buttons when)
• Working temperature:-10~60℃(default),can be customized of level: 0~80℃
• Work power:AC220V/50Hz,or DC24V/300m
• Outlet way: instrument standard plugs, Liquid level meter quick connect,Installation:instrument wall hung installation; Sensor gongs grain installation M68×2.0mm, or gongs circle clampon installation
• Protection level: IP66
• Operation environment: constant pressure, not anti-explosion, not anti-corrosion

Data sheet

Dimensions

Features

• Built-in variety of algorithms, suitable for a variety of standard weirs.
• Stable sensors - Suitable for harsh industrial situations
• Isolated 4~20mA current output. Optional spot bus interface.
• The blind zone can be manually set, shielding the probe near the interference signal.
• Calibrated at Factory. And if required we shall do calibration at site.

Sensors

Ultrasonic sensor Static pressure sensor
Applications
Measurement of water flow in Effluent, Waste Water, Rivers, Canals, Drains, Sewage, etc.
Flow Totalizer parameters
Flow measuring range: Depends on the size of the flume.
Maximum Count: 9999999999
Types of suitable weirs: Triangular weir, rectangular weir, Parshall flume, etc.
Display accuracy: 1 count. Overall accuracy depends on the input signal. Different Weirs /
flumes has different accuracies. A triangular weir has 1 to 2% flow error, a rectangular weir
has 1 to 4% accuracy, a Parshall flume has 3% flow error, etc.
Display: 2.8-inch LCD. Displays Height, Flowrate, Total Flow, etc.

Output
Voltage output: DC 12V or 24V
Signal output: RS485/RS232; 4~20mA; 2 channel relay

Triangle weirs

Installation sample


Advantage
The production capacity is 20000 ultrasonic converter and 100,000 ultrasonic sensor.

Shanghai I Fluid Technology Co., Ltd, a technique based company. We focus on the deployment , installation and management system of smart metering and smart grid in all utility sectors, include but not limited to water, heat, gas and electricity.

To adapt to the global environment protection trends, and China government policy, China put the green energy application and EIA at their first place. We do our best contribution to the government energy saving policy.

We put emphasis on central air conditioning system, energy distribution system in separated areas, green energy application in commercial buildings, municipal water / gas / heat supply, sewage discharge monitoring, and many other industrial applications. Adhere to the principle of “ low carbon energy, build future”, we aim to give solution to take the best avail of natural resources, improve energy efficiency, reduce energy consumption. Through more renewable energy, reasonable energy store technique, and minimize energy demands, we help our clients to build an intelligent low carbon energy network. Build the optimized electricity, heat, water and gas supply and demands system, finally to realize the LOW to ZERO energy system.

Over tens of years developing, we design and manufacture a complete set of energy relating products: central air condition with variable ventilation and ventilate at low temperature, flexible central air conditioning, cooling store capacitor, AMR/AMI, metering and level products.