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Flow meter
DX-glass tube rotor flowmeter

DX- 玻璃管转子流量计 概述: I. Overview of DX- glass tube rotor flowmeter :
是一种用来测量流体(液体或气体)流量的过程检测仪表。 Glass rotor flowmeter is a process detection instrument used to measure the flow of fluid (liquid or gas).
This glass rotor flowmeter adopts German VDI / VDE3513 standard and national JB / T9255 standard. Compared with similar domestic products, the flowmeter manufactured by German standards has the advantages of high measurement accuracy, good interchangeability, wide flow range, multiple connection methods, and convenient installation and maintenance. At the same time, it can also provide users with flow scales for different fluids, different viscosities, and different states according to the physical quantities such as temperature, pressure, density, and viscosity of different fluids. Greatly convenient for users.


DX- 玻璃管转子流量计原理: 2. Principle of DX- glass tube rotor flowmeter:
是一种变面积式的流量计。 Glass rotor flowmeter is a variable area flowmeter. It is mainly composed of a cone-shaped glass tube that expands from bottom to top and a float that can move up and down with the flow. When the fluid flows through the cone from bottom to top, the kinetic energy of the fluid generated by the rise of the float and the Buoyancy is the rise of the float. As the annular flow area between the inner wall of the cone tube and the float increases, the lift force generated by the fluid kinetic energy on the float decreases. When the sum of lift and buoyancy is equal to the gravity of the float itself, the float is in equilibrium and stabilizes at a certain height. A scale at this height position indicates the value of the flow through the flowmeter.

DXLZB玻璃管转子流量计的技术参数 3. Technical parameters of DXLZB glass tube rotor flowmeter

 

Nominal diameter

DN

(Mm)

Type Range degree Measuring range

Taper tube length

(Mm)

Accuracy level Allowed fluid condition to be measured
Water, 20

Air, 20 ℃,

1.01325 × 10 5 Pa

LZB / LZJ

LZB- () F

LZJ- () F

Temperature ( ) Pressure (MPa)
4

LZB-4

LZB-4F

 

1 ~ 10L / h

1.6 ~ 16L / h

2.5 ~ 25L / h

16 ~ 160L / h

25 ~ 250L / h

40 ~ 400L / h

100 2.5 2.5; 4 -20 ~ + 120

 

≤1

6

LZJ-6

LZJ-6F

 

2.5 ~ 25L / h

4 ~ 40L / h

6 ~ 60L / h

40 ~ 400L / h

60 ~ 600L / h

100 ~ 1000L / h

2.5 2.5; 4 -20 ~ + 120 ≤1
10

LZJ-10

LZJ-10F

 

6 ~ 60L / h

10 ~ 100L / h

16 ~ 160L / h

100 ~ 1000L / h

160 ~ 1600L / h

250 ~ 2500L / h

160 -20 ~ + 120 ≤1
15

LZB-15

LZB-15F

 

16 ~ 160L / h

25 ~ 250L / h

40 ~ 400L / h

0.25 ~ 2.5m 3 / h

0.4 ~ 4m 3 / h

0.6 ~ 6m 3 / h

350 2.5 2.5 -20 ~ + 120 ≤0.6
25

LZB-25

LZB-25F

 

40 ~ 400L / h

60 ~ 600L / h

100 ~ 1000L / h

1 ~ 10m 3 / h

1.6 ~ 16m 3 / h

2.5 ~ 25m 3 / h

1.5 2.5 -20 ~ + 120 ≤0.6
40

LZB-40

LZB-40F

 

160 ~ 1600L / h

250 ~ 2500L / h

4 ~ 40m 3 / h

6 ~ 60m 3 / h

430 2.5 -20 ~ + 120 ≤0.6
50

LZB-50

LZB-50F

 

0.4 ~ 4m 3 / h

0.6 ~ 6m 3 / h

10 ~ 100m 3 / h

16 ~ 160m 3 / h

450 1.5 2.5 -20 ~ + 120 ≤0.6
80

LZB-80

LZB-80F

 

1 ~ 10m 3 / h

1.6 ~ 16m 3 / h

5 ~ 25m 3 / h

50 ~ 250m 3 / h

80 ~ 400m 3 / h

500   2.5 -20 ~ + 120 ≤0.4
100

LZB-100

LZB-100F

 

5 ~ 25m 3 / h

8 ~ 40m 3 / h

12 ~ 60m 3 / h

120 ~ 600m 3 / h

200 ~ 1000m 3 / h

2.5 -20 ~ + 120 ≤0.4
Note: The maximum measurement range of liquid flow can be expanded to 90m 3 / h according to user needs

(mm) Four.DXLZB glass tube rotor flowmeter installation dimensions

Nominal diameter

DN

model Size Connection method
A B (high) C D E M N
4 LZB-4 36 171 119 43.5   145 ǿ14 hose
6 LZB-6
10 LZB-10 43 244 178 43.5   208 ǿ16.5 hose
15 LZB-15

ǿ95

470 ǿ65 ǿ15 4- ǿ14 _
_ Flange
25 LZB-25 ǿ115 ǿ85 ǿ25
40 LZB-40 ǿ145 570 ǿ110 ǿ40 4- ǿ18 _ _ Flange
50 LZB-50 ǿ160   ǿ125 ǿ50  
80 LZB-80 ǿ185 660 ǿ150 ǿ80 _ _ Flange
100 LZB-100 ǿ205 ǿ170 ǿ100

Five. DXGV glass tube rotor flowmeter specifications

Nominal diameter

DN (mm)

Type Measuring range L / h
Water 20L / h Gas (101325Pa20 ℃) m 3 / h
15

GV24-15

GV24-15F

GV / SV / FV10-15

GV / SV / FV10-15F

GV / SV20-15

GV / SV / FV20-15F

4-40

6-60

10-100

16-160

25-250

40-400

63-630

0.2-2

0.3-3

0.5-5

0.8-8

1.2-12

2.20

25

GV24-25

GV24-25F

GV / SV / FV10-25

GV / SV / FV10-25F

GV / SV20-25

GV / SV / FV20-25F

63-630

100-1000

160-1600

250-2500

2-20

3-30

5-50

8-80

40

GV24-40

GV24-40F

GV / SV / FV10-40

GV / SV / FV10-40F

GV / SV20-40

GV / SV / FV20-40F

160-1600

250-2500

400-4000

5-50

8-80

12-120

50

GV24-50

GV24-50F

GV / SV / FV10-50

GV / SV / FV10-50F

GV / SV20-50

GV / SV / FV20-50F

400-4000

630-6300

1000-10000

12-120

20-200

30-300

Six. DXGV glass tube rotor flowmeter technical parameters

Measuring range

Water (20 ℃) 10-1000000L / h

Air (101325Pa, 20 ℃) 0.3-220Lm 3 / h

Range degree 10:
level of accuracy 1.0; 1.6
Cone tube Length: 300mm
Ruler Millimeter Ruler and Flow Ruler
Tested fluid condition

Pressure: DN15-DN25: 1.0MPaDN40: 0.9MPaDN50: 0.7MPa

Temperature; -20 ℃ ~ 120

Seven. DXGV glass tube rotor flowmeter GV / SV / FV10 installation dimensions (mm)

Nominal diameter

DN

Window size a × b GV10 SV10 FV10
L1 (high) c Pipe thread Weight (kg) L2 (high) c d Weight (kg) L3 (high) c d e Weight (kg)
15 26 × 230 408 53 G1 / 2 1.2 400 ǿ13.5 ǿ44 1.5 310 ǿ65 ǿ95 4- ǿ14 1.8
25 414 75 G1 1.5 450 ǿ27 ǿ65 2 ǿ85 ǿ115 2.3
40 40 × 230 428 92 G11 / 2 2 44 ǿ80 3 310 ǿ110 ǿ145 4- ǿ18 3.4
50 50 × 230 431 116 G2 3.5 450 ǿ53 ǿ103 5 ǿ125 ǿ160 5.5

Eight. DXGV glass tube rotor flowmeter GV / SV / FV20 installation dimensions (mm)

Nominal diameter

DN

GV20 SV20 FV20
L1 (High) a Pipe thread L1 (high) a b L3 (high) d c e
15
375 ǿ58 G1 / 2 400 ǿ58 ǿ17 425 ǿ95 ǿ65 14 4- ǿ 14
375 G3 / 8 425 ǿ88.9 ǿ60.5 16 4- ǿ 16
15 375 ǿ58 NPT1 / 2 400 ǿ58 ǿ17 425 ǿ95.2 ǿ66.5 16 4- ǿ 16
25 375 ǿ74 G1 450 ǿ74 30 ǿ 30 425 ǿ115 ǿ85 14 4- ǿ 14
375 G3 / 4 450 425 ǿ108 ǿ79.2 16 4- ǿ 16
25 375 ǿ74 NPT1 450 ǿ74 ǿ30 425 ǿ123.9 ǿ88.9 19 4- ǿ 19
40 375 ǿ92 G11 / 2 450 ǿ92 ǿ44 425 ǿ145 ǿ110 18 4- ǿ 18
375 NPT11 / 2 450 425 ǿ127 ǿ98.6 16 4- ǿ 16
50 375 ǿ112 G2 450 ǿ112 ǿ54 425 ǿ160 ǿ125 18 4- ǿ 18
375 NPT2 450 425 ǿ152.4 ǿ120.7 4- ǿ19

Nine. DXGV glass tube rotor flowmeter GV24 installation dimensions (mm)

Nominal diameter

DN

Window size a × b L (High) c d e

weight

(Kg)

15 37 × 2302 500 ǿ65 ǿ95 14 4- ǿ 14 6
25 52 × 294 ǿ85 ǿ115 10
40 64 × 278 500 ǿ110 ǿ145 18 4- ǿ 18 13
50 94 × 266 ǿ125 ǿ160 18