Products
Product Overview:
CH-LW series of threaded connection turbine flowmeter is absorbed domestic and foreign flow meter technology after optimization of the design, has a simple structure, lightweight, high precision, good reproducibility, responsive, easy to install and maintain the use of the characteristics of the turbine flowmeter, is widely used in the measurement of closed pipeline with stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3, cemented carbide does not corrode, and No fibers, particles and other impurities, working temperature kinematic viscosity less than 5 × 10-6m² / s of the liquid, for kinematic viscosity greater than 5 × 10-6m² / s of the liquid, the flowmeter can be calibrated after the use of the real liquid calibration. If matched with the display meter with special functions, it can also be used for quantitative control, over-measurement alarm, etc. It is an ideal meter for flow measurement and energy saving.
Second, performance characteristics
1, high **** degree, generally up to ± 1% R, ± 0.5% R, high precision type up to ± 0.2% R;
2, the output pulse frequency signal, suitable for total measurement and connection with computer, no zero drift, strong anti-interference ability;
3, can get a very high frequency signal (3 ~ 4kHz), signal resolution;
4, wide range of degrees, medium and large caliber up to 1:20, small diameter of 1:10;
5, compact and lightweight structure, easy installation and maintenance, large circulation capacity;
6, for high-pressure measurement, the meter body does not have to open a hole, easy to make high-pressure type instrument;
7, can be made into an insertion type, suitable for large caliber measurement, small pressure loss, low price, can be taken out without stopping the flow, easy installation and maintenance.
8, good repeatability short-term repeatability of up to 0.05% ~ 0.2%, it is because of good repeatability, such as frequent calibration or online calibration can be extremely high **** degree, is the priority of each manufacturer to choose the flowmeter
三、Technical performance: Table 1
| Instrument caliber and connection | 4、6、10、15、20、25、32、40Threaded connection |
| （15、20、25、32、40）50、65、80、100、125、150、200With flange connection | |
| Accuracy Class | ±0.5%R |
| range ratio | 1:10；1:15；1:20 |
| Instrument Material | 304 stainless steel, 316(L) stainless steel, etc. |
| Temperature of measured medium (℃) | -20～＋120℃ |
| environmental conditions | Temperature -10～+55℃, relative humidity 5%～90%, atmospheric pressure 86～106Kpa |
| output signal | 4-20mADC current signal (LWGY-□C type) |
| Power supply | LWGY-□B type: self-powered by lithium battery (can be used continuously for 3 years); LWGY-□C type: +24VDC |
| signal transmission line | 2×0.3（two-wire system） |
| transmission distance | ≤1000m |
| signal line interface | Internal thread M20×1.5 (LWGY-□C type) |
| Explosion-proof grade | ExdIIBT6 |
| protection class | IP65 |
IV. Measuring range and working pressure: Table 2
| Instrument caliber（mm） | Normal flow range（m3/h） | Extended flow range（m3/h） | Conventional Pressure Resistance（MPa） | Specialized pressure resistance class (MPa) (flange connection type) |
| DN 4 | 0.04～0.25 | 0.04～0.4 | 6.3 | 12、16、25 |
| DN 6 | 0.1～0.6 | 0.06～0.6 | 6.3 | 12、16、25 |
| DN 10 | 0.2～1.2 | 0.15～1.5 | 6.3 | 12、16、25 |
| DN 15 | 0.6～6 | 0.4～8 | 6.3、2.5（法兰） | 4.0、6.3、12、16、25 |
| DN 20 | 0.8～8 | 0.45～9 | 6.3、2.5（法兰） | 4.0、6.3、12、16、25 |
| DN 25 | 1～10 | 0.5～10 | 6.3、2.5（法兰） | 4.0、6.3、12、16、25 |
| DN 32 | 1.5～15 | 0.8～15 | 6.3、2.5（法兰） | 4.0、6.3、12、16、25 |
| DN 40 | 2～20 | 1～20 | 6.3、2.5（法兰） | 4.0、6.3、12、16、25 |
| DN 50 | 4～40 | 2～40 | 2.5 | 4.0、6.3、12、16、25 |
| DN 65 | 7～70 | 4～70 | 2.5 | 4.0、6.3、12、16、25 |
| DN 80 | 10～100 | 5～100 | 2.5 | 4.0、6.3、12、16、25 |
| DN 100 | 20～200 | 10～200 | 2.5 | 4.0、6.3、12、16、25 |
| DN 125 | 25～250 | 13～250 | 1.6 | 2.5、4.0 |
| DN 150 | 30～300 | 15～300 | 1.6 | 2.5、4.0 |
| DN 200 | 80～800 | 40～800 | 1.6 | 2.5、4.0 |
V. Nominal diameter: Table 3
| model number | Nominal diameter （mm） | L(mm) | H(mm) | G | Lˊ(mm) | D(mm) | d(mm) | 孔数 |
| CH-LW-4 | 4 | 275 | 145 | G1/2 | 215 |
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| CH-LW-6 | 6 | 275 | 145 | G1/2 | 215 |
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| CH-LW-10 | 10 | 455 | 165 | G1/2 | 350 |
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| CH-LW-15 | 15 | 75 | 173 | G1 |
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Ф65 | Ф14 | 4 |
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CH-LW-25 CH-LW-32 |
25 32 | 100 140 | 180 | G5/4 G2 |
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Ф85 Ф100 | Ф14 | 4 |
| CH-LW-40 | 40 | 140 | 178 | G2 |
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Ф14 |
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4 |
| CH-LW-50 | 50 | 150 | 252 |
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Ф125 | Ф18 | 4 |
| CH-LW-80 | 80 | 200 | 287 |
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Ф160 | Ф18 | 8 |
| CH-LW-100 | 100 | 220 | 322 |
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Ф180 | Ф18 | 8 |
| CH-LW-150 | 150 | 300 | 367 |
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Ф250 | Ф25 | 8 |
| CH-LW-200 | 200 | 360 | 415 |
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Ф295 | Ф23 | 12 |
VI. Product selection table: Table 4
| Model No. | Explanation | |||||||
| CH-LW─ | □ | /□ | /□ | /□ | /□ | /□ | /□ | |
| Nominal diameter | 4 |
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4mm, standard range 0.04～0.25m3/h, wide range 0.04～0.4m3/h |
| 6 | 6mm, standard range 0.1～0.6m3/h, wide measuring wheel for 0.06～0.6m3/h | |||||||
| 10 | 10mm, standard range 0.2~1.2m3/h, wide range 0.15~1.5m3/h | |||||||
| 15 | 15mm, standard range 0.6～6m3/h wide range 0.4～8m3/h | |||||||
| 20 | 20mm, standard range 0.8～8m3/h, wide range 0.4～8m3/h | |||||||
| 25 | 25mm, standard range 1～10m3/h, wide range 0.5～10m3/h | |||||||
| 32 | 32mm, standard range 1.5～15m3/h, wide range 0.8～15m3/h | |||||||
| 40 | 40mm, standard range 2～20m3/h, wide range 1～20m3/h | |||||||
| 50 | 50mm, standard range 4～40m3/h, wide range 2～40m3/h | |||||||
| 65 | 65mm, standard range 7～70m3/h, wide range 4～70m3/h | |||||||
| 80 | 80mm, standard range 10-100m3/h, wide range 5-100m3/h | |||||||
| 100 | 100mm, standard range 20～200m3/h, wide range 10～200m3/h | |||||||
| 125 | 125mm, standard range 25-250m3/h, wide range 13-250m3/h | |||||||
| 150 | 150mm, standard range 30-300m3/h, wide range 15-300m3/h | |||||||
| 200 | 200mm, standard range 80～800m3/h, wide range 40～800m3/h | |||||||
| typology | B | Battery-powered field display type | ||||||
| C | Field display/4～20mA 2-wire current output | |||||||
| C1 | Field display/RS485 communication protocol | |||||||
| C2 | Field display / HART communication protocol | |||||||
| Accuracy Class | 0.5 | Accuracy 0.5 grade | ||||||
| 1.0 | Accuracy 1.0 grade | |||||||
| Turbine Type | W | Wide range turbine | ||||||
| S | Standard turbine | |||||||
| Material | S | 304 stainless steel | ||||||
| L | 316(L) Stainless Steel | |||||||
| flameproof | E | Explosion-proof type (Explosion-proof grade: ExdⅡBT6) | ||||||
| pressure rating | N | General (refer to Table 2) | ||||||
| H(x) | High pressure (refer to Table 2) | |||||||
VII. Technical parameters: Table 5
| Instrument Model | CH-LW-N | CH-LW-A | CH-LW-N | CH-LW- A | CH-LW-B | CH-LW- C |
| signal output | impulse | 4-20mA | impulse | or 4-20mA | not have | 4-20mA/Pulse |
| Power supply | +24VDC±15% | +24VDC±15% | 24VDC±15% | 24VDC±15% | li-ion battery | 24VDC±15% |
| Accuracy Class | 1.0~0.5 grade | 1.0~0.5 grade | 1.0~0.5 grade | |||
| Measurement range | standard range | standard range | Standard or extended range | |||
| monitor (computer) | not have | not have | there are | |||
| communication interface | not have | not have | Optional RS485 | |||
| Instrument Material | stainless steels | stainless steels | stainless steels | |||
| Explosion-proof grade | not have | ExdIIBT6或ExiaIICT4 | ExdIIBT6或ExiaIICT4 | |||
| protection class | IP60 | IP65 | IP65 | |||
| Power Consumption | ＜1W | ＜1W | ＜1W | |||
| instrument passages | DN4~DN250 | DN4~DN250 | DN4~DN250 | |||
| Medium temperature | -20℃~120℃ | -20℃~120℃ | -20℃~120℃ | |||
| environmental temperature | -30℃~60℃ | -30℃~60℃ |
-30℃~60℃ |
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