Intelligent ultrasonic flowmeter

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ZWS - 100 y seriesIntelligent ultrasonic flowmeterIs the introduction of advanced flow measurement t…

Products overview: 
ZWS - 100 y seriesIntelligent ultrasonic flowmeterIs the introduction of advanced flow measurement technology and low cost of then send encapsulated into an organic whole, can be directly installed on the measuring point.Section one-piece flow of ultrasonic flowmeter with no moving parts, without daily maintenance, instrument of the microprocessor digital signal encoding and cross-correlation detection procedures, can provide long-term drift measurement.But for almost all clean uniform liquid flow body.It is imported, integrated circuit pasted on the circuit complete digitization, integration, and improve the measuring accuracy and stability, greatly reducing the breakdown maintenance, is the current domestic advanced technology, stable performance, easy installation of a low power flow measuring instrument, according to many years of experience, and constantly updated products, the new version of the ultrasonic flowmeter its powerful functions, operation speed, strong anti-interference ability, cycle sampling frequency up to 128 times, are widely used in industrial field of online measurement of various kinds of liquid flow rate.

Second, the working principle: 
ZWS - 100 y series intelligent basic principle of ultrasonic flowmeter and type ultrasonic wave travels in the flow of fluid in fluid velocity on load information.So by the received ultrasound can detect the fluid velocity, thus converted to flow.According to the test, can be divided into velocity difference method, doppler method, beam deflection method, noise and the relevant laws such as different types of ultrasonic flowmeter.Sound waves flowmeter is more than ten years along with the rapid development of integrated circuit technology began to be used one. 
Applications: 
ZWS - 100 y series intelligent ultrasonic flowmeter is widely used in petroleum, chemical industry, power plants, metallurgy, mining, food, pharmaceutical, paper making, steel and other industrial and mining enterprises, and applied to the energy saving monitoring, traffic network monitoring, etc. 
1, drinking water, river water and sea water, underground water, cooling water, high temperature water and sewage; 
2, lubricating oil, diesel oil, fuel oil; 
3, chemical liquid. 
4, other homogeneous fluid. 
Four, the main features:
1, high reliability, high performance, good applicability, full display in Chinese.
2, day, month and year flow accumulation function, can record run 64 days before the operation, the first 64 months, the first five years of accumulated flow operation.
3, on, power management function, can record, electricity and traffic on 64 times before, can be manually or automatically compensate to reduce flow losses.
4, effectively overcome the wall of the ultrasonic signal attenuation and the rough surface of the pipe to scattering of ultrasonic signal from surface reduce the energy consumption of ultrasonic signal.
5, improved flow measurement accuracy, especially suitable for pipe flow measurement.
6, unique disassembly with pressure, does not affect the normal production, at any time to complete the on-line replacement and maintenance.
Five, the technical parameters: 
1, the measurement precision, better than 1%; 
2, after sex: better than 0.2%; 
3, measurement cycle: 500 ms (2 times per second); 
4, work power: 24 VDC or 220 vac (optional); 
5, power consumption: 50 ma work power; 
6, velocity range: 0 to 32 m/s (velocity resolution of 0.001 m/s); 
7, show: local 2 x 10 type backlit display can display Chinese characters: positive and negative cumulant, the instantaneous flow rate, flow velocity, the total work, date, between real work state error code, ultrasonic signal strength and quality, etc.; 
8, operations: 16 key touch keyboard; 
9, signal input: 3 road 4-20 ma analog input optional precision (0.1%) 
2 way three-wire system PT100 resistance signal input is optional; 
10, signal output: isolated RS485 output optional (expanding MODBUS protocol, FUJI agreement and compatible with the domestic similar products of other manufacturers communication protocol), 2 road isolation editable OCT output optional (one pulse width between 6 ms - 1 seconds can be set to factory default 200 milliseconds), the extensible 1 ~ 3 road 4-20 ma output optional (passive); 
11, connection mode: flange/articulated type (health) optional; 
12, other features: can be transmitted to the code file to realize software upgrade; 
Records to the first 64 days, 32 months before, the first two years accumulative flow rate and working state, can record 16 times more than before, electricity and traffic, and can automatically or manually flow adding.Programmable controller built-in quantitative, can use the external input signal or start NODBUS instructions; 
13, power-off protection: power data is not lost 100000 hours; 
14, medium temperature: - 40 ℃ ~ 160 ℃; 
15, protection level: IP65; 
16, electrical interface: M20 x 1.5. 
Six, measuring medium: 
1, type: tap water, sea water, industrial sewage, various oil, acid alkali, alcohol, beer can support such as ultrasonic single homogeneous liquid; 
2, temperature: 0 ℃ ~ 160 ℃; 
3, turbidity, 10000 PPM or less, and the bubble content is small; 
4, velocity: 0 ~ + 30 m/s; 
5, flow: positive and reverse bidirectional measurement, and can be measured net flows. 
Seven, sensor installation steps: 
1, choose to have enough length of straight pipe position, is a new pipeline, no rust, easy to operate. 
2, clear the clutter and on the pipeline corrosion, using grinding Angle grinder abort rust. 
The launch of 3, the sensor surface with plenty of coupling agent (such as butter, vaseline, etc.), besmear decoupling. 
4, the purpose of the mixture is ruled out sensor emission surface and air between the external surface of the pipe. 
5, special remind: should avoid sand and debris into the middle. 
6, horizontal pipe wall upside may remain some bubble, in the selection of pipe should be installed on the tangent to the pipe on the side of a vertical surface.

Eight, signal strength:
Refers to the received signal strength after amplification of ultrasonic signal amplitude, with 3 digits said: [000] is not detected any signal;[999] zui refers to the received signal.
Although signal between 500-999 meter can work, but the stronger signal strength can get good results, so users should adjust the signal of the sensor to receive to zui.
Suggestions according to the following methods of operation to get larger signal strength:
1, if measured flow numerical instability, when signal strength is below 700, to choose a better location measurement.
2, the outer surface of the polishing pipe carefully, some slightly more coupling agent.
3, slightly adjust the relative position of the sensor at the same time observe the flow meter of received signal strength, parked in the signal zui big place, at the same time also want to check if the distance between the sensor can satisfy the demands of M25 window display.
Signal quality (signal good degrees) :
Flowmeter signal quality is to use Q value.Q value means the higher signal-to-noise ratio (SNR) of an acronym, of course, is more accurate, the measured data of the Q values should be between 600-900 range, the higher the better. 
Nine, directions for use: 
1, zero flow rate checks 
Around when the pipeline fluid static, without strong magnetic field interference, strong vibration, header shows zero, automatically set zero point at this time, eliminate the zero drift, the runtime must to remove small signal, usually 5% flow is less than the full process flow, automatic removal.Zero at the same time also can adjust menu. 
2, instrument panel keyboard operation 
Before start the meter running, the first to set parameters effectively, for example, using the system, installation, pipe diameter, pipe wall thickness, pipe material, pipe roughness, fluid type and the distance between two probes, velocity of flow unit, small speed, speed, etc.All parameters input correctly, instrument can display correctly the actual flow value 
3, flowmeter calibration 
Guarantee the accuracy of flowmeter, we conduct regular check, usually we use higher precision direct comparison, portable flowmeter: using the test data to compute error = - standard/standard measurements, using relative error calculation, correction factor, satisfy error of measurement error of plus or minus 2%, can meet the measurement requirements.This simple and convenient operation, can effectively improve the accuracy of measuring. 
Ten, how to correctly install: 
Ultrasonic flowmeter installation distance zui what is appropriate, and how to determine the ultrasonic flowmeter probe position and will affect their use in the future, detailed as follows: 
1, the pipeline parameter input instrument, choose pipe installation, installation distance are obtained. 
2, V installation: make sure of a point, according to the installation distance in a horizontal position measure another point. 
3, ultrasonic flowmeter in horizontal pipe runs, generally should choose the central pipe, avoid the top and bottom.

Eleven, fixed tube sections of sensor technology parameters:

Twelve, selection of coding:

Selection of interpretation: 
(1) : ac power is suitable for ZWS - 100 - f type, ZWS - 100 y type, other host models applicable to battery power supply or dc power supply. 
Dc power supply is suitable for all types products, in addition to ZWS - 100 f1, F2, F3, ZWS - 100 - s power supply is 24 VDC, the rest 8-36 VDC. 
ZWS - 100 - w battery power meter can also be 8 to 36 v power supply, if necessary please specify when ordering. 
(2) : the battery power ultrasonic industrial water meter/heat meter, if choose plug-in or external clip-on sensors, z big measurable diameter for DN800. 
(3) : cast iron, glass fiber reinforced plastic, PVC, such as cement welding pipe if choose insert type sensor, need to match special pipe hoop before installation, please specify when ordering. 
(4) : z is only applicable to small readings ZWS - 100 - w type battery power ultrasonic water meter selection. 
(5) : 4-20 ma output, if choose active work ac or dc 24 v power supply requirements. 
OCT 200 ms, pulse width of the factory default Settings programmable between 6 ~ 1000 ms. 
Battery power ultrasonic water meter or heat meter RS485 output has two kinds of optional, is a kind of internal lithium battery power supply, the working voltage of 3.3 V, another is to provide dc power to the external, please specify when you place an order, otherwise May 485 output interface is invalid.

13, design 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, 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.