Stationary doppler ultra sound wave flow meter

Products overview:

ZW - LDN - 1 - G seriesStationary doppler ultra sound wave flow meterUsing the doppler effect of physics, in any liquid that exist in the discontinuous flow will make is the reflection of the ultrasonic signal frequency shift (i.e. signal phase difference), by measuring the phase difference, can be measured flow velocity.Frequency shift velocity linear function, it is after filtering circuit, can produce a stable, repeatable and linear instructions.In theory, the discontinuous can be suspended some bubbles, solid, or caused by the fluid disturbance interface.Produce and receive ultrasonic signals, and to provide data to the host, the host signal processing and provide analog output for speed display and volume flow and accumulation and relay output.In addition, the host contains a signal strength indicator, it can ensure satisfactory operation.
Second, the working principle:
ZW - LDN - 1 - G seriesStationary doppler ultra sound wave flow meterIs, on the basis of the principle of doppler ultrasound measurement of phase difference method is used to process the signal.It has a unique digital filtering technology and frequency modulation demodulation technology, automatic plastic received waveform signal, it can be measured with the pipe lining, and less sensitive to pipe vibration.
Acoustic reflection material must be acoustic impedance and the fluid acoustic impedance (acoustic wave propagation in a medium speed difference) have at least 10% of the difference.
Liquid particles must be large enough (greater than 100 um) or contain bubbles, with longitudinal reflection of sound waves.
Sensor plug-in installation, the installation position of upstream and downstream straight pipe must be long enough, usually, need 10 d, upstream downstream straight pipe need 5 d.D for the pipe diameter.
Applications:
ZW - LDN - 1 - G seriesStationary doppler ultra sound wave flow meterMainly used in municipal sewage treatment plant, drainage pumping station in environmental detection and mines, oil field, metallurgical, chemical, oil refining, paper making, food and other industries of urban drainage, industrial wastewater and domestic sewage, slurry, pulp, such as oil/water mixture flow metering.Rigid pipes such as steel mill, hard plastic, can be a variety of pipe diameter and wall thickness of tube containing suspended solid particles or two-phase liquid measurement.
Four, typical success stories:
1, a petrochemical plant, the water pipe (700 mm) Φ lined with cement, pipeline internal and external surface corrosion is serious;Enterprise water yield census;
2, a petrochemical water quality purification plant, circulating water and pump sewage measurement;
3, a steel company: various kinds of circulating water, groundwater, pipelines under complicated circumstances;Enterprise each section water monthly measurement;
4 rubber factory, a petrochemical company: enterprise all sorts of circulating water, the water pump.
Five, the main features:
1, can measure the pure liquid and dirty, therefore widely used in the enterprise from the level of tap water medium to sewage, waste water, containing slag liquid measurement.
2, straight pipe installation without strict requirements, only need 1 ~ 3 d (diameter) straight section can obtain stable readings, not affected by the pipeline vibration, can be in the pump room.

3, the condition of pipe has no strict requirements for pipeline corrosion or lined with cement materials can be measured.

4, the built-in high capacity rechargeable lithium battery, z long continuous working time up to 20 hours.
5, the operation is very convenient, panel have a signal strength indicator, fluid status, normal and fault indicator, simply set step pipe diameter can be measured.
6, instrument can adjust the size of the transmitted power sensor device (knob), the instrument can work in a variety of harsh environment.Military level components design, the host has anti-corrosion, fungicide, lane road scrub brush host built-in desiccant, normal life span more than 10 years.
Six, the technical parameters:
1, the measured medium: slurry, sewage, grey water, beer, residual oil, soap,
2, output method: 4 ~ 20 ma, the load is less than 600 Ω industrial water, raw water, the river (including air bubbles, solid);
3, power supply voltage: AC200V (+ / - 20%), 50 hz.Particle content > 20 g/L) multiphase liquid;
4, ambient temperature: host: - 10 ℃ ~ + 45 ℃;
5, pipe material: metal, organic glass, UPVC plastic, etc.;
6, probe: normal temperature - 20 ℃ ~ + 60 ℃ high temperature 20 ℃ ~ + 120 ℃;
7, measuring diameter: 10 mm ~ 3000 mm.;
8, environment humidity: relative humidity of 85% or less;
9, medium speed: 0.04 m to 10.0 m/s;
10, cable length: standard length: portable 5 m;
11, the measuring accuracy: 2.0 (the field calibration is superior to the 1.5 level);
Seven, using the environment:
Stationary, insert type 10 m
1, installation method: SMT, plug-in installation;
2, special length: 20 m and 30 m and 40 m, 50 m and 60 m, 80, according to;
3, repeatability: 0.05%.
The host and the probe mounting point distance
1, the display mode: 2 x 16 LCD backlit display;
2, meter weight: (G) stationary 4 kg or less;
3, it can display flow, flow velocity, the total flow, etc.
(B) portable 4.5 kg or less
1, the keyboard type: touch 4 * 4 keyboard;
2, installation dimensions: (G) stationary 275 mm * 203 mm * 118 mm;
3, power-fail protection: power automatic protection, electricity automatic measurement;
(B) portable 340 mm * 210 mm * 235 mm;
1, the cumulative output: isolation, light emission, open collector output."USES the advanced method of doppler effect" measuring principle, the use of ultrasonic reflection when the medium to be a relative motion signal and transmitting frequency difference, circular tube of the liquid flow is obtained.
2, the equation is expressed as: Q for liquid flow coefficient K of flow in A pipe effective section C for ultrasonic beam and pipe axis Angle f1 for ultrasonic emission frequency delta f for frequency offset
3, ultrasonic flowmeter using tube outside the non-contact measurement, measurement process and piping liquid without any contact, so don't suffer from the liquid pressure, corrosion, pollution and so on many factors.

Eight, the technical data table:

Nine, selection of coding (ZW - LDN - 1 - G)

Ten,Design and selection and ordering information:

1, products: specify model standard, if any, please live in wei sales hotline advisory prices, details!

2, technical support, if not specified product specifications, please put the working condition of requirements, design drawings, technical specifications, fax or to us.

3, product orders for parameters: size (DN), nominal pressure (Mpa), temperature (℃), the connection way (flange, etc.) to the clamp.

4, offer confirmation: the company provide price list and technical standard specifications to customers to confirm, in the technical aspects to confirm before you draw up a contract.

5, quality requirements, quality standards, the supplier is responsible for the quality conditions: according to the relevant state quality standards.

After-sales service commitment:

1, from the date of signing of the contract, I in the way provided for products of the company offers free maintenance and maintenance service, commitment to lifelong maintenance service;

2, jiangsu wei measurement and control instrument co., LTD. Sales manager will be in regular contact with customers, understａnd the usage of products, and solve the problems of the customers to use in the process of produce, free of charge to provide technical support;

3 the man-made damage is found, the warranty period, our company is responsible for the maintenance, and the resulting maintenance fee;

4, product quality problems or are not satisfied with product, the user can choose unconditional return, wei tt&c don't charge any fees, appear quality problem, bear the freight back and forth.