Features
■No moving components, long-term stabilization, structure is simple for easy installation and maintenance;
■The output of the sensor is the pulse frequency, its frequency is linear with the actual flow rate of the fluid measured, it has no zero drift, and the performance is very stable. The structure is various in the form of pipeline and plug-in type flow sensors;
■The accuracy is high, the accuracy of measuring liquid is usually 11.0%, and the accuracy of measuring gas is ±1.5%;
■The measurement range is wide, and in the range of Reynolds number is 2~7, it can reach 1:20;
■Low pressure loss（about 1 /4-1 /2 of the orifice flowmeter）, which belongs to the energy-saving flow instrument;
■The installation method is changeful. It can be installed horizontally, vertically and at different angles according to different process pipelines;
■It adopts interference cancellation circuit and anti-vibration sensor head, so it has certain anti-environmental vibration performance;
■It adopts ultra-low-power single-chip microcomputer technology. For one 3V10Ah battery, can be used for more than 3 years;
■The nonlinearity of the meter coefficient is corrected by software to improve the measurement accuracy;
■Adopts EPROM to conduct power fail safeguard to the accumulative flow, and the effective protection time is more than 10 years;
Fig.1 Relation between Strouhal number (St) and Reynolds number (Re)
Product Classification
1. Clamp type vortex flowmeter
Small installation size, simple structure and low cost.
2. Flange type vortex flowmeter
Integrated flange structure, easy installation, and it is widely used in the measurement of flow of compressed air, saturated and superheated steam, natural gas and various medium.
3.Sanitation type vortex flowmeter
It is widely used in liquid and steam metering in food and pharmaceutical industries. It can also measure small particles, miscellaneous turbid liquids, and can be used as flow transmitter in automatic control systems.
LUGB measurement range and working pressure
1、General liquid and gas applicable flow range Table1
|
Meter diameter（mm）
|
Liquid measurement range（m3/h）
|
Gas measurement range（m3/h）
|
Connection mode
|
compression resistance grade（MPa）
|
|
DN15
|
1.2-6.2
|
5-25
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN20
|
1.5-10
|
8-50
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN25
|
1.6-16
|
10-70
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN32
|
1.9-19
|
15-150
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN40
|
2.5-26
|
22-220
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN50
|
3.5-38
|
36-320
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN65
|
6.2-65
|
50-480
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN80
|
10-100
|
70-640
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN100
|
15-150
|
130-1100
|
Flange clamping / Flange connection
|
2.5/1.6
|
|
DN125
|
25-250
|
200-1700
|
Flange clamping / Flange connection
|
1.6/1.6
|
|
DN150
|
36-380
|
280-2240
|
Flange clamping / Flange connection
|
1.6/1.6
|
|
DN200
|
62-650
|
580-4960
|
Flange clamping / Flange connection
|
1.6/1.6
|
|
DN250
|
140-1400
|
970-8000
|
Flange clamping / Flange connection
|
1.6/1.6
|
|
DN300
|
200-2000
|
1380-11000
|
Flange clamping / Flange connection
|
1.6/1.6
|
Product selection
Table2
|
Model
|
Interpretation
|
|
LUGB
|
¨
|
¨
|
¨
|
¨
|
¨
|
¨
|
Vortex flow meter
|
|
Connection mode
|
|
|
1
|
|
|
|
Flange connection（for full tube vortex flowmeter）
|
|
|
|
|
2
|
|
|
|
Flange clamping（for full tube vortex flowmeter）
|
|
Measured medium
|
|
|
1
|
|
|
|
liquid
|
|
|
|
2
|
|
|
|
general gas
|
|
|
|
3
|
|
|
|
compressed air
|
|
|
|
4
|
|
|
|
steam
|
|
inside nominal diameter
|
|
|
00
|
|
|
|
15mm
|
|
|
|
01
|
|
|
|
20mm
|
|
|
|
02
|
|
|
|
25mm
|
|
|
|
03
|
|
|
|
32mm
|
|
|
|
04
|
|
|
|
40mm
|
|
|
|
05
|
|
|
|
50mm
|
|
|
|
06
|
|
|
|
65mm
|
|
|
|
08
|
|
|
|
80mm
|
|
|
|
10
|
|
|
|
100mm
|
|
|
|
12
|
|
|
|
125mm
|
|
|
|
15
|
|
|
|
150mm
|
|
|
|
20
|
|
|
|
200mm
|
|
|
|
25
|
|
|
|
250mm
|
|
|
|
30
|
|
|
|
300mm
|
|
Compensation
|
|
|
N
|
|
|
|
Uncompensated（suitable for volume flow measurement occasions）
|
|
|
|
T
|
|
|
|
Temperature compensation（suitable for saturated steam）
|
|
|
|
P
|
|
|
|
Pressure compensation（suitable for saturated steam）
|
|
|
|
F
|
|
|
|
Temperature and pressure compensation（(suitable for superheated steam and compressed air）
|
|
Output type
|
|
|
N
|
|
|
|
Sensor type：24VDC power supply, output three-wire pulse signal
|
|
|
|
A
|
|
|
|
Transmitter type：24VDC power supply，Output current signal 4~20mA
|
|
|
|
B
|
|
|
|
Intelligent：Lithium battery power supply，status display（Dual power supply, pulse output optional）
|
|
|
|
C1
|
|
|
|
Intelligent：24VDC power supply，status display、output 4-20mA（pulse output optional）
|
|
|
|
C2
|
|
|
|
Intelligent：24VDC power supply，status display、output two-wire system 4-20mA HART communication、（pulse output optional）
|
|
|
|
C3
|
|
|
|
Intelligent：24VDC power supply，status display、RS485 communication、（Dual power supply, pulse output optional）
|
|
accuracy class
|
|
|
15
|
|
|
|
1.5 level
|
|
|
|
|
10
|
|
|
|
1.0 level
|
|
material quality
|
|
|
S
|
|
|
|
304 stainless steel
|
|
|
|
|
L
|
|
|
|
316（L）stainless steel（Customized，long supply cycle）
|
|
Explosion-proof
|
|
|
N
|
|
|
|
Non-explosion-proof type
|
|
|
|
|
E
|
|
|
|
Explosion-proof type，ExdIICT6
|
|
Pressure grade
|
|
|
P
|
|
|
|
Actual pressure grade（customization for high pressure, long supply cycle）
|
Structure and installation size
1. Installation size of full tube type turbine flow sensor, (Fig.2) and (Table 3)
Fig.2 Structure style
Table of flowmeter outline dimension（unit：mm） Table3
|
Nominal diameter
|
Body length L
|
Internal diameter d
|
External diameter D
|
Height H
|
|
15
|
80
|
15
|
69
|
350
|
|
20
|
80
|
20
|
69
|
350
|
|
25
|
80
|
25
|
69
|
350
|
|
32
|
80
|
32
|
69
|
353
|
|
40
|
80
|
40
|
80
|
357
|
|
50
|
80
|
50
|
88
|
367
|
|
65
|
80
|
65
|
105
|
385
|
|
80
|
80
|
80
|
120
|
397
|
|
100
|
80
|
100
|
148
|
417
|
|
125
|
85
|
125
|
175
|
442
|
|
150
|
90
|
150
|
195
|
467
|
|
200
|
105
|
200
|
250
|
520
|
|
250
|
120
|
250
|
300
|
570
|
|
300
|
120
|
300
|
350
|
620
|
2. Main physical dimension of the flange type flowmeter, (Fig.3) and (Table 4)
Fig.3 Structure style
Table of flowmeter outline dimension（Unit：mm） Table 4
|
Nominal diameter
|
Internal diameter
|
Flange outer diameter
|
Overall length
|
Center pitch
|
Flange thickness
|
Bolt aperture
|
Bolt number
|
Overall height
|
|
|
d1
|
D
|
L
|
K
|
b
|
d2
|
n
|
H
|
|
15
|
15
|
95
|
200
|
65
|
14
|
14
|
4
|
323
|
|
20
|
20
|
105
|
200
|
75
|
16
|
14
|
4
|
323
|
|
25
|
25
|
115
|
200
|
85
|
16
|
14
|
4
|
323
|
|
32
|
32
|
140
|
200
|
100
|
18
|
18
|
4
|
317
|
|
40
|
40
|
150
|
200
|
110
|
18
|
18
|
4
|
322
|
|
50
|
50
|
165
|
200
|
125
|
20
|
18
|
4
|
327
|
|
65
|
65
|
185
|
200
|
145
|
22
|
18
|
8
|
334
|
|
80
|
80
|
200
|
200
|
160
|
24
|
18
|
8
|
344
|
|
100
|
100
|
235
|
250
|
190
|
26
|
22
|
8
|
354
|
|
125
|
125
|
270
|
250
|
220
|
28
|
26
|
8
|
366
|
|
150
|
150
|
300
|
300
|
250
|
30
|
26
|
8
|
379
|
|
200
|
200
|
360
|
350
|
310
|
32
|
26
|
12
|
404
|
|
250
|
250
|
425
|
450
|
370
|
35
|
30
|
12
|
429
|
|
300
|
300
|
485
|
500
|
430
|
38
|
30
|
16
|
454
|
The installation of flowmeter and pipeline（Fig. 4-fig.8）
