Model LUGB Vortex Flowmeter is mainly used to measure the flow of medium fluids in industrial pipelines, such as gas, liquid, steam and other media. Its characteristics are low pressure loss and no movable parts. The instrument adopts piezoelectric stress sensor with high reliability. It can work in the temperature range of - 20 ~350 ~C. There are analog standard signal and digital pulse signal output, which can be easily used in conjunction with digital systems such as computers.
Measuring Principle
When a cylindrical drag body is inserted vertically in the fluid, vortices will alternately occur on both sides of the body. As the fluid moves downstream, a series of vortices will be formed, which is called Kaman Vortex Street. The drag body that produces the vortex street is called the vortex generator. Experiments show that the frequency of vortices is proportional to the velocity of flow.
When the vortex is generated on both sides of the cylinder, the sensor is induced by the alternating lift force perpendicular to the flow direction. The lift frequency is the vortex frequency. After amplifying and shaping the signal transducer, the transducer can directly output the pulse signal proportional to the flow velocity or convert it into the 4-20mA standard signal output.
Technical parameters
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Standards adopted |
Q/YHC0401-2001 JB/T6807-93 |
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Measuring Medium |
Gas, Liquid, Steam |
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Caliber Specifications |
Flange Clamping Type |
25，40，50，65，80，100 |
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Flange Mounting Type |
100，125，150，200 |
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Insertion type |
150~2000 |
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Flow Measurement Range |
Normal Velocity Measurement Range |
Gas：5~50m/s Liquid：0.5~7m/s |
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Normal Flow Measurement Range |
See table below for details |
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Measuring Accuracy |
Flange Clamping & Flange Mounting Type accuracy class 1 , 1.5 |
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Type accuracy class 2.5 |
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The Measured Medium Temperature |
-25 ℃~100 ℃ -25 ℃~150 ℃ -25 ℃~250 ℃ |
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Operating Pressure |
1.6MPa； 2.5MPa; 4.0MPa |
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Output Signal |
Pulse Voltage Output Signal |
High-level ：8~10V Low-level ：0.7~1.3V (Explosion proof type：High-level：4~5V Low-level ：0.7~1.3V) |
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The duty cycle of the pulse is about 50%，The transmission distance is 100 meters. |
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Standard Current Output Signal |
DC4~20mA Allowable transmission distance of less than 600 Ohm (power supply 24V) is 3000 meters |
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Instrument Use Environment |
temperature:-25 ℃~+55 ℃ humidity: 5~90% RH50 ℃ |
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Material |
Body Material :1Cr18Ni9Ti，Converter housing material: Aluminum alloy，（The body material can be produced with 00Cr17Ni14Mo2 according to the order requirements.） |
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Power Supply |
DC12V±10%； DC24V±10%； or double lithium battery 3.6V 7.5Ah |
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Explosion-Proof |
T1~T5 |
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Protection Class |
IP65 |
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Requirements for front and rear straight pipe sections |
Please see table below. |
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Flow range of Gas under Operating Conditions & Liquid
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Caliber |
DN |
15 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
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Liquid |
m3 /h |
0.3~4 |
1.2~16 |
1.5~18 |
2.25~30 |
4~55 |
5.9~84 |
9~135 |
14~200 |
22~330 |
32~480 |
56~800 |
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Gas |
m3 /h |
5~30 |
10.2~80 |
15~150 |
22~220 |
35~350 |
60~600 |
90~900 |
140~1400 |
220~2200 |
300~3000 |
550~5500 |
The mounting dimensions of Inserted Vortex Flowmeter (mm):
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DN |
H |
Position |
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ф200－ф500 |
950 |
Center Velocity |
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ф500－ф1000 |
1200 |
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ф1000－ф1400 |
1500 |
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ф1400－ф2000 |
1810 |
Average Velocity |
Dimensions
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TYPE |
Caliber mm |
PRESS MPa |
L |
G |
D |
d1 |
N-d2 |
d |
b |
Weight |
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Normal TEMP |
High TEMP |
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Flange Clamping |
15 |
2.5～4.0 |
66 |
280 |
500 |
65 |
- |
- |
15 |
- |
7.5 |
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25 |
2.5～4.0 |
66 |
280 |
500 |
65 |
- |
- |
25 |
- |
7 |
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32 |
2.5～4.0 |
66 |
285 |
505 |
72 |
- |
- |
32 |
- |
10 |
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40 |
2.5～4.0 |
70 |
290 |
510 |
80 |
- |
- |
40 |
- |
11 |
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50 |
2.5～4.0 |
85 |
295 |
515 |
90 |
- |
- |
50 |
- |
12.5 |
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65 |
1.6～2.5 |
98 |
310 |
530 |
105 |
- |
- |
65 |
- |
17 |
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80 |
1.6～2.5 |
110 |
320 |
540 |
120 |
- |
- |
80 |
- |
20 |
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100 |
1.6～2.5 |
110 |
330 |
550 |
150 |
- |
- |
100 |
- |
27 |
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Flange Mounting |
100 |
1.6 |
250 |
310 |
530 |
215 |
180 |
8-Φ18 |
100 |
26 |
20 |
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125 |
1.6 |
250 |
323 |
545 |
245 |
210 |
8-Φ18 |
125 |
26 |
22 |
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150 |
1.6 |
300 |
335 |
555 |
280 |
240 |
8-Φ23 |
150 |
28 |
24 |
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200 |
1.6 |
320 |
370 |
590 |
335 |
295 |
12-Φ23 |
200 |
30 |
31 |
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Ordering Codes
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MODEL |
Basic Code |
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LUGB |
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Connection |
-1 |
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Flange Mounting |
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-2 |
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Flange Clamping |
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-3 |
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Insertion type |
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Measuring Medium |
2 |
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Liquid |
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3 |
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Gas |
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4 |
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Steam |
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5 |
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Hot Water |
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Caliber |
-××× |
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Output Signal |
-2 |
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Two-wire pulse |
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-3 |
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Three-wire pulse |
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-4 |
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4-20mA,2 wire |
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Meter |
0 |
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No Meter |
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1 |
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Intelligent Digital Display Indicators (Instantaneous and Cumulative) |
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Power Supply |
X |
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DC12V Pulse output only |
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Y |
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DC24V |
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Z |
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Battery Powered |
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Body Material |
-C |
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OCr18Ni12Mo2Ti |
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-D |
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1Cr18Ni9Ti |
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PRESS |
1 |
1.6MPa |
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2 |
2.5MPa |
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3 |
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4.0MPa |
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Explosion-Proof |
N |
No explosion proof |
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B |
EExi |
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