Portable ultrasonic flowmeter

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ZWS - 100 - h series portable ultrasonic flowmeter is a universal system, complete functions, handhe…

Products overview:
ZWS - 100 - h series portable ultrasonic flowmeter is a universal system, complete functions, handheld time difference method, and a variety of optional features and accessories to meet your all kinds of liquid flow measurement requirements.The small, lightweight, rechargeable battery and universal power supply design can make it more can measure over the ideal choice.Equipped with a coupling agent, built-in data recorder, a pair of 5 m sensor cable, sensor fixed clamp, instrument box or a custom portable aluminum alloy high strength protective case.
Second, the working principle:
ZWS - 100 - h series portable ultrasonic flowmeter by using the theory of measuring the ultrasonic transmission time in the pipeline.Medium (liquid) flow velocity in the pipe, and a lag between the time of ultrasonic propagation along the downstream and upstream of medium with linear relationship.As long as measure the ultrasonic propagation time of downstream and upstream respectively, can be obtained on the basis of the linear relationship at various points along the pipeline route on the velocity of the instantaneous average flow velocity.In this way, the medium flow can be obtained by flow rate, pipe cross-sectional area and the Reynolds number.
When ultrasound beam propagation in the liquid, the flow of the fluid produces small changes will make the travel time, and the propagation time of change is proportional to the liquid flow rate, which can calculate the flow rate of the liquid.
Applications:
ZWS - 100 - h series portable ultrasonic flowmeter using external clip-on sensor to measure liquid flow.Installation process is very simple, the man-machine interface in Chinese, easier to operate.Especially suitable for traffic balance test and traffic monitoring: drinking water, river water and sea water, cooling water, hot water, industrial wastewater, lubricating oil, diesel oil, fuel oil, chemical liquid, etc.
Four, the main features:
1, built-in data recorder can record the date, the cumulative flow, signal status, working hours, etc.
Line 2, 4 Chinese characters with display instantaneous flow, flow velocity, cumulative flow, signal state, etc.
3, the standard data interface RS232 for networked detection or export record data.
4, OCT output positive and negative, and the static cumulative frequency pulse signal and the original signal (1-9999 KHZ).
5, non-contact measurement, not interfere with the pipe, no pressure loss.
Six, drive circuit capacitance parameter automatic detection.
Five, the technical parameters:
1, the measured medium: all kinds of liquid.
2, pipe diameter range: DN10mm ~ 6000 mm.
3, velocity range: 0.01 ~ 30 m/s/s.
4, the accuracy of volume flow/measured value plus or minus 1% depending on the application conditions of the measured values of plus or minus 0.5%.
5, the operating temperature: - 30 ~ 40 ℃.
Section 6, power: built-in rechargeable battery 3 AAA battery adapter built-in Ni - H 100 v - 240 vac.
7, resolution: 0.025 cm/s.
8, reaction time: 1 s.
9, operating time: in the case of a full charge > 14 h.Measurement precision, better than 1.0%.
10, repeatability, better than 0.2%.
11, measuring cycle: 500 ms (2 times per second, 128 groups of data per cycle).
12, working power supply: 90-230 vac (built-in nickel metal hydride rechargeable batteries, sustainable work 12 hours after adequate).
13, operation: 4 * 4 + 2 sets;Take charge indicator.
14, installation method: topical type installation, simple operation, convenient.
Line 15, display: 4 Chinese characters with display instantaneous flow, flow velocity, cumulative flow, signal state, etc.
16, signal output: the isolation of RS232 (FUJI extension protocol).
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, 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, power supply: AC220V DC8 ~ 36 v or AC7 ~ 30 v.
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;Z [999] 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, preparation before use:
1, use the portable package provides special cable connection between a host and the probe, do not mix.
2, battery charging methods: good source with matching power plug lines to connect with the host, the host of the power switch to OFF position, will automatically start charging.When the host unit of the LED light, says it is recharged.When a host unit LED shining or dies, charging is complete.The battery takes about 2 hours.
Ten, notable matters of installation:
1, the liquid must be full of pipes, find out and accurately input pipe diameter, material, wall thickness, the lining material and lining thickness pipe related parameters.
2, transducer, the straight pipe before and after when installation should at least meet the requirements of before 10 d after 5 d, avoid the pipe at the top and bottom, as far as possible in the horizontal position of the pipeline installation, or with a diameter of 45 °, pay attention to avoid weld.
3, according to the installation of the flowmeter calculated from installing a transducer, and comprehensive reference flowmeter signal intensity, measured the speed of sound value, signal quality parameters such as distance, installation, inspection, adjust the transducer installation location to the ideal position.If the meter measured velocity value and the actual sound velocity is more than + / - 6 m/s, flow meter measured flow value and the actual flow value also can appear difference.
4, flowmeter verification and calibration on different pipe diameter, will get different correction coefficient, even if the same host USES the same type of different transducer, will also get different correction coefficient.Therefore, using a single ultrasonic flow meter to measure the different pipe diameter was users, should be in accordance with the requirements of the national metrological verification procedures were on a regular basis.
Eleven, application considerations:
1, the flowmeter to prevent sun and rain.
2, carrying and instruments have to be careful, be careful not to make its strong impact and vibration, it is recommended to use portable box.
3, should try to choose a good environment to use, choose not too much dust and corrosive gas using the site.
4, to prevent the power cord is damaged, to avoid the risk of electric shock and fire.
5, should be timely close the instrument after using the power switch.
6, after each use, should be timely to recharge the battery.

Twelve, configuration:
1, host: 1;
1 to 2, sensors:;
Optional sensors:
Standard of small sensor S type 1 (DN15 ~ 100 mm/applicable temperature 0?70 ℃)
Standard medium type sensor M1: ((~ 700 mm/applicable temperature 0?70 ℃)
L standard large sensor type 1: (12-6000 - mm/applicable temperature 0?70 ℃)
High temperature and small sensors S1H type: (DN15 ~ 100 mm/applicable temperature 0?160 ℃)
High temperature medium type sensor M1H: (applicable (0 ~ 700 mm/applicable temperature?160 ℃)
Standard small stent type sensor S1Z: (DN15 ~ 100 mm/applicable temperature 0?70 ℃)
Medium-sized stent type sensor M1Z: (applicable standards (0 ~ 700 mm/applicable temperature?70 ℃)
3, steel chains: 1 set (outer bind type sensor);
4, chargers: 1;
Article 5, data line: 1;
Article 6, special cable: 2 (single 5 meters long);
7, coupling agent: 1 bottle;
8, a tape measure: 1 only;
9, protective box: 1 (aluminum alloy).

13, host, shape dimension:


14, host wiring diagram:

15 and optional sensors:

16, selection of coding:

Example: hs1m1x5 ZWS - 100.
Explanation:, standard standard M1 sensors, equipped with standard S1 type sensors, signal cable 5 m x 2.

17, 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.