LWGY liquid turbine flow meter is a new generation of turbine flow meter with simple structure, lightness, high precision, good reproducibility, sensitive reaction, convenient installation, maintenance and use. Turbine flow meter is a kind of precision flow measuring instrument, which measures the flow rate and total amount of impurity free and corrosion free liquid.
Made in China. brand DDTOP, model LWGY
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LWGY series turbine flowmeter is a new generation flowmeter which has absorbed advanced international technology of flow instrumentation. After optimized design, it has the features of simple structure, light weight, high precision, good reproducibility, responsiveness, easy installation and maintenance, etc. Turbine flowmeter is a precision flow measurement instrument to measure the flow and total volume of liquid without impurities and corrosion. It is widely used in petroleum, chemical, metallurgical, scientific research and other fields.
Features
• High accuracy: generally up to ±1%R, ±0.5%R, high precision type up to ±0.2%R.
• Good repeatability, with short-term repeatability of 0.05% R to 0.2%R, which makes it the preferred flow meter in trade settlements, precisely because of its good repeatability, such as frequent or on-line calibration for high accuracy.
• Output pulse frequency signal, suitable for total volume measurement and computer connection, no zero drift, strong anti-interference ability.
• Very high frequency signals (3-4 KHz) can be obtained, with strong signal separation rates.
• Wide range, up to 1:20 for medium and large sizes and 1:10 for small sizes.
• Compact and lightweight, easy to install and maintain, with high circulation capacity.
• Suitable for high-pressure measurement, no holes are required on the meter body, and it is easy to make a high-pressure meter • There are many types of special sensors, which can be designed according to the special needs of users, such as low temperature type, two-way type, down hole type, special type for sand mixing;
• It can be made into a plug-in type, suitable for large size measurement, with low pressure loss, low price, continuous flow out, easy installation and maintenance.
Operating Principle
When the measured liquid flows through the sensor type, under the action of the fluid, the blade rotates under force, and its speed is proportional to the average flow velocity of the pipeline. The rotation of the blade periodically changes the magnetic resistance value of the magnetic circuit, and the periodic change of the magnetic flux resistance in the detection coil generates an induced electromotive force with the same frequency as the blade rotation frequency, which is amplified, converted and processed.
Applications
1. Basic Parameters
| Measured medium | No impurities, low viscosity, no strong corrosive liquid | |||
| Executive standard | Turbine flow sensor（JB/T9246-1999 ） | |||
| Inspection procedures | Turbine flow meter（JJG1037-2008 ） | |||
| Instrument size（mm） and connection type | Flange connection type | DN15-DN200 | ||
| Thread connection type | DN4-DN50 | |||
| Flange clamping type | DN4-DN200 | |||
| Accuracy | ±1%R、±0.5%R、±0.2%R （Need to be customized） | |||
| Range ability | 1:10 ; 1:15 ; 1:20 | |||
| Sensor material | SS304, SS316（L）etc | |||
| Conditions of use | Medium temperature :-20°C ~ +80°C | Ambient temperature：-20°C~+60°C | ||
| Relative humidity: 5%-90% | Atmospheric pressure: 86 Kpa ~ 106Kpa | |||
| Signal output function | Pulse signal, 4~20mA signal | |||
| Communication output | RS485 communication, HART protocol, etc. | |||
| Power supply | A. External power supply: +24VDC±15%, ripple ≤±5%, suitable for 4-20mA output, pulse output, RS485, etc. | |||
| Flange standard | B. Internal power supply: 1 set of 3.6V lithium battery, the battery voltage can work normally at 3.0V~3.6V. | |||
| Normal standard GB/T9113-2000 | ||||
| Other standard
|
International | DIN, ANSI, JIS etc. | ||
| China | HG, JB | |||
| Thread specification | Conventional specifications British pipe thread (male thread) (refer to standard GB/T7307-2001) | |||
| Other specifications: female thread, spherical thread, NPT thread, etc. | ||||
| Electrical Interface | M20*1.5 female thread (NPT thread needs to be customized) | |||
| Explosion-proof | ExdllCT6Gb | |||
| Ingress protection | IP65 or higher (can be customized) | |||
2. Measuring Range and Size
Liquid turbine flowmeter measuring range table
| Instrument size
（mm） |
Normal flow range extended flow range | Conventional connection type and pressure rating | Special pressure rating (MPa) | Starting flow (m3/h) | Maximum
pressure loss *1 (KPa) |
|
| (m3/h) | (m3/h) | |||||
| 4 | 0.04~0.25 | 0.04-0.4 | Threaded installation，6.3MPa | Clamping connection
<42MPa |
0.02 | 120 |
| 6 | 0.1-0.6 | 0.06-0.6 | Threaded installation，6.3MPa | 0.05 | 80 | |
| 10 | 0.2~1.2 | 0.15-1.5 | Threaded installation，6.3MPa | 0.07 | 50 | |
| 15 | 0.6-6 | 0.5-5 | Threaded installation，6.3MPa | 0.35 | 35 | |
| 20 | 0.8-8 | 0.45 ~ 9 | Threaded installation，6.3MPa | 0.3 | 35 | |
| 25 | 1-10 | 0.5 ~ 10 | Threaded installation，6.3MPa | 0.4 | 35 | |
| 32 | 1.5-15 | 0.8-15 | Threaded installation，6.3MPa | 0.6 | 35 | |
| 40 | 2-20 | 1~20 | Threaded installation，6.3MPa | 0.6 | 35 | |
| 50 | 4~40 | 2~40 | Flange installation，4.0MPa | Clamping connection
<26MPa |
1 | 35 |
| 65 | 7~70 | 5~70 | Flange installation，1.6MPa | 4 | 25 | |
| 80 | 10-100 | 7-100 | Flange installation，1.6MPa | 5 | 25 | |
| 100 | 20 ~ 200 | 10-200 | Flange installation，1.6 MPa | Clamping connection
<15MPa |
8 | 25 |
| 125 | 25-250 | 13-250 | Flange installation，1.6 MPa | 10 | 25 | |
| 150 | 30-300 | 15-300 | Flange installation，1.6 MPa | 12 | 25 | |
| 200 | 80 ~ 800 | 40 ~ 800 | Flange installation，1.6 Mpa | Clamping connection <11MPa | 20 | 25 |
| Accuracy level*2 | 0.5级 | 1.0级 | – | – | – | – |
Notes:
| Model | Contents | |||||||||
| LWGY- | □ | /□ | /□ | /□ | /□ | /□ | /□ | /□ | /□ | |
| Instrument type | N | 24V power supply, no local display, pulse output type | ||||||||
| A | 24V power supply, local display, 4~20 mA output type | |||||||||
| G1 | Battery power supply, local display, no output | |||||||||
| GX | External power supply, local display, RS485/current/pulse output | |||||||||
| E1 | Battery power supply, local display, no output | |||||||||
| EX | External power supply, local display, RS485/current/pulse output | |||||||||
| Connection type | FL | Flange connection | ||||||||
| LW | Thread connection | |||||||||
| JZ | Clamping connection | |||||||||
| Size | 4 | DN4 | ||||||||
| 6 | DN6 | |||||||||
| 10 | DN10 | |||||||||
| 15 | DN15 | |||||||||
| 20 | DN20 | |||||||||
| 52 | DN25 | |||||||||
| 32 | DN32 | |||||||||
| 40 | DN40 | |||||||||
| 50 | DN50 | |||||||||
| 65 | DN65 | |||||||||
| 80 | DN80 | |||||||||
| 100 | DN100 | |||||||||
| 125 | DN125 | |||||||||
| 150 | DN150 | |||||||||
| 200 | DN200 | |||||||||
| Accuracy | 05 | ±0.5% | ||||||||
| 10 | ±1.0% | |||||||||
| 02 | ±0.2 (negotiate before, long production cycle) | |||||||||
| Measuring range | S | Standard range | ||||||||
| W | Extended range | |||||||||
| Z | Special range | |||||||||
| Body material | S | SS304 | ||||||||
| L | SS316（L) | |||||||||
| Blade material | S | 2Cr13 blade | ||||||||
| L | Duplex steel blade | |||||||||
| Explosion-proof | N | No | ||||||||
| E | ExdIICT6 Gb | |||||||||
| Pressure & temperature rating | N | Conventional | ||||||||
| H(X) | High pressure reference table 4-2 | |||||||||
You can request the necessary certificates, documentation, instructions and user manuals for DDTOP LWGY using the special form.
You can buy DDTOP LWGY in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. DDTOP LWGY price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
See also: Flow meters