Pipeline ultrasonic flowmeter

Products overview:
ZWS - 100 y seriesPipe sections of ultrasonic flowmeterUsing the principle of the low voltage, pulse receive more emission, adopting double balanced differential signal transmitting and receiving technology has nothing to do with the hardware design method;By choosing the advanced large scale integrated circuit and advanced SMD SMT soldering process.To ensure that each factory of flowmeter has the same performance.Pipe sections of sensor solves the external clip-on sensor working long hours attenuation and can't get a signal scale and the pipe inner surface.Can be applied to steel, cast iron, glass fiber reinforced plastic and other pipes.Once get the recognition of the broad masses of users.
Second, the working principle:
ZWS - 100 y series pipe sections of 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 pipe sections of ultrasonic flowmeter can measure the fluid is water, sea water, or oil, uniform liquid slurry, conduct electricity or not, corrosive or no corrosive liquid can be measured.

Four, the main features:
1, a variety of power supply mode: single section 3.6 V lithium battery can work for 6 years, the two wire system 4-20 ma, RS232 and RS485 output type, without the battery also can work normally;
2, measuring rich content: circulating cumulative flow, heat accumulation, instantaneous flow, transient heat, for the return water temperature, current, temperature difference, fault running time, work status, date, time, etc.;
3, high protection grade: can achieve IP68 protection grade, can be immersed to 2 meters work;
4, firm structure, measuring section with precision casting process, no leakage, no pressure loss and the moving parts, ten years of free maintenance design;
5, humanized design: magnetic bar operation, internal double button, easy to operate;Fault diagnosis;
6 and ordinary metal pipes such as: carbon steel, stainless steel, cast iron, copper, aluminum, etc.;
7, other nonmetallic pipes, such as: PVC, PR, FRP, such as cement pipe.
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.
Host:
1, the accuracy is better than 1%, the repeatability is 0.5%;
2, for 500 ms measurement cycle;
3, backlit LCD can display instantaneous flow and cumulative amount at the same time, the instantaneous heat and accumulative total quantity of heat, velocity, time and other data;
4, 4 ~ 20 ma output current, or 0 to 20 ma, such as impedance 0 ~ K, accuracy of 0.1%;
5, which can realize heat measurement or one dual purpose;
6, automatic recording, 64 month before, 64 days before the five years of accumulated flow;
7, automatically record before 64 calls and interruption time and flow rate, can be manually or automatically fill amount, reducing the loss of user traffic;
8, automatic record 64 days before the working state of the flow meter is normal;
9, the data interface to factory is configured to RS - 232, equipped with RS - 232 / RS - 485 converter can be turned into RS - 485 after way;
Seven, working environment:
1, the temperature of the host: - 30 ℃ ~ 80 ℃;
2, flow sensor temperature: - 40 ℃ ~ 160 ℃;
3, temperature sensor temperature: selected according to user's requirements;
4, host, humidity: 85% RH;
5, flow sensor, humidity: can work immersed depth of 3 m or less;
6, fixed hanging type ultrasonic flow power: AC220V DC8 ~ 36 v or AC7 ~ 30 v.

Eight, 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.

9, how to correctly install:
Pipe sections of ultrasonicInstallation from 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.

Ten, signal intensity:
Refers to the received signal strength after amplification of ultrasonic signal amplitude, with 3 digits said: [000] is not detected any signal;Z [999] refers to the received signal.
Although the 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 z.
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.

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, measurable pipe diameter for DN800 zui.
(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.