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Turbine flow meter

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Product Overview:

  CH-LW series 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 turbine flowmeter, widely used in measuring closed pipelines with stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3, carbide does not corrode, and no fiber, Particles and other impurities, working temperature kinematic viscosity of less than 5 × 10-6m² / s of the liquid, for kinematic viscosity greater than 5 × 10-6m² / s of the liquid, the flow meter can be calibrated for the real liquid calibration after use. 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, the performance characteristics

1, high **** degree, generally up to ± 1% R, ± 0.5% R, high precision type up to ± 0.2% R;

2、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, medium and large caliber up to 1:20, small caliber for 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 diameter measurement, small pressure loss, low price, can be taken out without stopping the flow, easy to install and maintain.

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


III. 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(flange) 4.0、6.3、12、16、25
DN 20 0.8~8 0.45~9 6.3、2.5(flange) 4.0、6.3、12、16、25
DN 25 1~10 0.5~10 6.3、2.5(flange) 4.0、6.3、12、16、25
DN 32 1.5~15 0.8~15 6.3、2.5(flange) 4.0、6.3、12、16、25
DN 40 2~20 1~20 6.3、2.5(flange) 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) hole
CH-LW-4 4 275 145 G1/2 215


CH-LW-6 6 275 145 G1/2 215


CH-LW-10 10 455 165 G1/2 350


CH-LW-15 15 75 173 G1
Ф65 Ф14 4
CH-LW-25
CH-LW-32
25 32 100 140 180 G5/4 G2
Ф85 Ф100 Ф14 4
CH-LW-40 40 140 178 G2
Ф14
4
CH-LW-50 50 150 252

Ф125 Ф18 4
CH-LW-80 80 200 287

Ф160 Ф18 8
CH-LW-100 100 220 322

Ф180 Ф18 8
CH-LW-150 150 300 367

Ф250 Ф25 8
CH-LW-200 200 360 415

Ф295 Ф23 12

VI. Product selection table: Table 4

Model No. Explanation
CH-LW /□ /□ /□ /□ /□ /□
Nominal diameter 4





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
Turbine Type S 304 stainless steel
L 316(L)stainless steels
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/
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级
Measurement range standard range standard range Standard or extended range
monitor (computer) / / there are
communication interface / / Optional RS485
Instrument Material stainless steels stainless steels stainless steels
Explosion-proof grade / ExdIIBT6/ExiaIICT4 ExdIIBT6/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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