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glass spinner flowmeters

The flow meter mainly consists of a conical glass tube that expands from bottom to top and a float that moves up and down with the flow of the fluid.
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Description SELECTION CRITERIA INSTALLATION AND US INSTALLATION AND USE

LZB/LZJ series glass spinner flowmeters are widely used in chemical industry, petroleum,light industry, medicine, environment protection, food, measuring, testing and scientific research institutes.They are used to measure the flow rate of single-phase non pulse fluid (liquid or gas).
LZB/( )F/LZJ-( )F series corrosion resistant glass spinner flowmeters have a good corrosion resistance, and can be used to measure acid (except hydrofluoric acid), alkali, oxidizer and other corrosive gasses or liquid. They are suitable for chemical industry, pharmacy, papermaking, sewage disposal etc.

 

 

The flowmeter is mainly composed of a piece of taper glass pipe with bigger bottom and smaller top and a floater moving up and down along with the fluid flow(Fig.3).When the fluid flows across the taper pipe from bottom to top, the floater rises under the lift force "S" on the floater due to the fluid dynamic energy and the fluid buoyancy force "A". When the sum of the lift force "S" and thebuoyancy force "A" is equal to the floater weight "G", the floater is in equilibrium and stable at a certain height. The scale on the taperpipe indicates the fluid flow.

The taper pipe of LZB/LZB-( )F flowmeter is a pipe with smooth inner wall (See Fig.4). For the flowmeter with the bore larger than DNl5, the floater moves up and down along the guide rod and remains stable ;There are three guiding edges on the inner wall of the taper pipe of LZJ/LZJ-()F flowmeter to keep the floater stable (See Fig.5).The flowmeter with the bore smaller than DNl0 adopts hose connection, is equipped with needle flow control valve;The flowmeter with the bore larger than DN15 adopts flanged connection.

Sharp edge cylindrical floater Ball floater
Fig.2
 
Fig.3 Fig.4 Fig.5


 

Bore

DN

(mm)

Model

Measuring range

Taper pipe

length(mm)

Accuracy class

State of the fluid allowed

Water,20℃

air,20℃,101325Pa

LZB/LZJ

LZB-()F

LZJ-()F

Temperature(℃)

Pressure(MPa)

4

LZB-4
ZB-4F

 

(1-10)L/h

(1.6-16)L/h

(2.5-25)L/h

(16-160)L/h

(25-250)L/h

(40-400)L/h

160

2.5

4

-20~+120

≤1

6

LZB-6
LZJ-6
ZB-6F

 

(2.5-25)L/h

(4-40)L/h

(6-60)L/h

(40-400)L/h
(60-600)L/h

(100~1000)L/h

10

LZB-10
LZJ-10
LZB-10F

 

(6~60)L/h

(10-100)L/h

(16~160)L/h

 

(0.1-1)m³/h  
(0.16-1.6)m³/h 
(0.25-2.5)m³/h

15

LZB-15
LZJ-15F

 

(16~160)L/h

(25~250)L/h

(40~400)L/h

(0.25~2.5)m³/h

(0.4~4)m³/h

(0.6~6)m³/h

350

2.5

≤0.6

25

LZB-25
LZJ-25F

 

(40~400)L/h

(60~600)L/h

(100~1000)L/h

(1~10)m³/h

(1.6~16)m³/h

(2.5~25)m³/h

40

LZB-40
LZJ-40F

 

(0.16-1.6)m³/h

(0.25-2.5)m³/h

(4~40)m³/h

(6~60)m³/h

430

50

LZB-50
LZJ-50F

 

(0.4~4)m³/h

(0.6~6)m³/h

(10~100)m³/h

(16~160)m³/h

450

80

LZB-80
LZJ-80F

 

(1~10)m³/h

(1.6~16)m³/h

(50~250)m³/h

(80~400)m³/h

500

≤0.4

100

LZB-100
LZJ-100F

 

(5~25)m³/h

(8~40)m³/h

(120~600)m³/h

(200~1000)m³/h


Bore

DN

A

B

C

D

E

Coupling

4

178

204

230

Ø10

38.5×33(FRONT)

Hose pipe

6

178

204

230

Ø10

42×33(FRONT)

Hose pipe

10

178

208

244

Ø12

45×40(FRONT)

Hose pipe e

15

Ø95

Ø65

470

Ø15

4- Ø 14

Flange

25

Ø115

Ø85

470

Ø25

4- Ø 14

Flange

40

Ø145

Ø110

570

Ø40

4- Ø 18

Flange

50

Ø160

Ø125

570

Ø 50

4- Ø 18

Flange

80

Ø185

Ø150

660

Ø80

4- Ø 18

Flange

100

Ø205

Ø170

660

Ø100

4- Ø 18

Flange

 

 

 

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