- Phone
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Address
South Industrial Concentration Zone, Dadong Town, Lianshui County, Huai'an City
Jiangsu Zhongliang Instrument Co., Ltd
South Industrial Concentration Zone, Dadong Town, Lianshui County, Huai'an City
I. Overview
LWGYThe series of turbine flow sensors are a new generation of turbine flow meters that have been optimized and designed based on domestic and foreign flow instrument technology. They have the characteristics of simple structure, lightweight, high accuracy, good reproducibility, sensitive response, and easy installation, maintenance, and use. They are widely used for measuring stainless steel in closed pipelines1Cr18Ni9TiThe2Cr13And corundumAl2O3Hard alloy does not corrode and has no impurities such as fibers or particles. Its kinematic viscosity at working temperature is less than5×10-6m2/sLiquid with a viscosity greater than5×10-6m2/sThe liquid can be used for real liquid calibration of the flowmeter. If paired with display instruments with special functions, it can also perform quantitative control, over limit alarm, etc., making it an ideal instrument for flow measurement and energy conservation.
This type of turbine flow product itself does not have on-site display function, and only transmits the flow signal in the form of pulses for remote output. The instrument is inexpensive, highly integrated, and compact in size, making it particularly suitable for use with secondary display devicesPLCTheDCSWaiting for the computer control system to be used in conjunction.
2、 Product Features
1. Accuracy, generally up to ±1%R, ±0.5%RThe high-precision type can reach ±0.2%R;
2. Good repeatability, short-term repeatability can be achieved0.05%~0.2%,It is precisely because of its good repeatability, such as the accuracy obtained through regular calibration or online calibration, that flow meters are preferred in trade settlement;
3. Output pulse frequency signal, suitable for total measurement and computer connection, no zero drift, strong anti-interference ability;
4. Can obtain high frequency signals(3-4kHz)Strong signal resolution;
5. Wide range, capable of reaching medium to large diameters1:20The small caliber is1:10;
6. Compact and lightweight structure, easy installation and maintenance, and high circulation capacity;
7. Suitable for high voltage measurement, there is no need to open holes on the instrument body, making it easy to make high voltage instruments;
8. There are various types of specialized sensors that can be designed according to the specific needs of users, such as low-temperature, bidirectional, downhole, sand mixing, etc;
9. Can be made into an insertion type, suitable for measuring large diameters, with low pressure loss, low price, can be removed without interruption, and easy installation and maintenance.
3、 Basic parameters and technical performance
1.Technical performance: Table1
| Instrument caliber and connection method | 4、6、10、15、20、25、32、40Using threaded connections |
| (15、20、25、32、40)50、65、80、100、125、150、200Using flange connection |
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| accuracy class | ±1%R, ±0.5%R |
| turndown ratio | 1:10;1:15;1:20 |
| Instrument material | 304stainless steel316(L)Stainless steel, etc |
| Temperature of the tested medium (℃) | -20~+120℃ |
| environmental conditions | Temperature -10~+55 ℃, relative humidity 5%~90%Atmospheric pressure86~106Kpa |
| output signal | Pulse frequency signal, low level ≤0.8VHigh level ≥8V; 4-20mA DC current signal |
| power supply | +12VDCThe+24VDC(optional) |
| Signal transmission line | STVPV3*0.3(Three line system); 2 * 0.3 (two-wire system) |
| transmission distance | ≤1000m |
| Signal line interface | internal threadM20×1.5 |
| Explosion-proof rating | ExdIIBT6 |
| Protection level | IP65 |
2.Measurement range and working pressure: gauge2
| Instrument caliber(mm) | Normal flow range(m3/h) | Expand traffic range(m3/h) | Conventional stress tolerance(MPa) | Specially designed pressure resistance level(MPa)(Flange connection method) |
| DN 4 | 0.04~0.25 | 0.04~0.4 | 6.3 | 12、16The25 |
| DN 6 | 0.1~0.6 | 0.06~0.6 | 6.3 | 12、16The25 |
| DN 10 | 0.2~1.2 | 0.15~1.5 | 6.3 | 12、16The25 |
| DN 15 | 0.6~6 | 0.4~8 | 6.3、2.5(Flange) | 4.0、6.3、12、16The25 |
| DN 20 | 0.8~8 | 0.45~9 | 6.3、2.5(Flange) | 4.0、6.3、12、16The25 |
| DN 25 | 1~10 | 0.5~10 | 6.3、2.5(Flange) | 4.0、6.3、12、16The25 |
| DN 32 | 1.5~15 | 0.8~15 | 6.3、2.5(Flange) | 4.0、6.3、12、16The25 |
| DN 40 | 2~20 | 1~20 | 6.3、2.5(Flange) | 4.0、6.3、12、16The25 |
| DN 50 | 4~40 | 2~40 | 2.5 | 4.0、6.3、12、16The25 |
| DN 65 | 7~70 | 4~70 | 2.5 | 4.0、6.3、12、16The25 |
| DN 80 | 10~100 | 5~100 | 2.5 | 4.0、6.3、12、16The25 |
| DN 100 | 20~200 | 10~200 | 2.5 | 4.0、6.3、12、16The25 |
| DN 125 | 25~250 | 13~250 | 1.6 | 2.5The4.0 |
| DN 150 | 30~300 | 15~300 | 1.6 | 2.5The4.0 |
| DN 200 | 80~800 | 40~800 | 1.6 | 2.5、4.0 |
4、 Instrument selection
table3
| type number | say bright |
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| LWGY─ | □ | /□ | /□ | /□ | /□ | /□ | /□ |
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| public call, name, say, weigh through path | 4 |
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| 4mm, standard range0.04~0.25m3/hThe wide range is0.04~0.4m3/h |
| 6 | 6mm, standard range0.1~0.6m3/hThe width wheel is0.06~0.6m3/h |
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| 10 | 10mm, standard range0.2~1.2m3/hThe wide range is0.15~1.5m3/h |
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| 15 | 15mm, standard range0.6~6m3/hWide range is0.4~8m3/h |
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| 20 | 20mm, standard range0.8~8m3/hThe wide range is0.4~8m3/h |
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| 25 | 25mm, standard range1~10m3/hThe wide range is0.5~10m3/h |
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| 32 | 32mm, standard range1.5~15m3/hThe wide range is0.8~15m3/h |
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| 40 | 40mm, standard range2~20m3/hThe wide range is1~20m3/h |
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| 50 | 50mm, standard range4~40m3/hThe wide range is2~40m3/h |
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| 65 | 65mm, standard range7~70m3/hThe wide range is4~70m3/h |
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| 80 | 80mm, standard range10~100m3/hThe wide range is5~100m3/h |
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| 100 | 100mm, standard range20~200m3/hThe wide range is10~200m3/h |
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| 125 | 125mm, standard range25~250m3/hThe wide range is13~250m3/h |
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| 150 | 150mm, standard range30~300m3/hThe wide range is15~300m3/h |
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| 200 | 200mm, standard range80~800m3/hThe wide range is40~800m3/h |
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| Type | N | +12VPower supply, pulse output, high level ≥8VLow level ≤0.8V |
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| accuracy class | 05 | precision0.5level |
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| 10 | precision1.0level |
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| Turbine Type | W | Wide range turbine |
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| S | Standard turbine |
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| material | S | 304stainless steel |
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| L | 316(L)Stainless steel |
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| Explosion proof | E | Explosion proof type (explosion-proof grade: ExdIIBT6) |
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| pressure rating | N | routine (Refer to the table)2) |
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| H(x) | high pressure (Refer to the table)2) |
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Note:DN15~DN40The usual method is threaded connection. If you want to use flange connection, please add "nominal diameter" after it“(FL)”
For example, selecting a flange connected explosion-proof turbine flowmeter to measure diesel requires pulse signal output, and the pipeline isDN40, requires precision0.5Level,304Stainless steel material, pressure resistant instrument16MPaThe measurement range is the standard range, and the product model should be:LWGY-40(FL) /05/S/S/E/H16