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PProducts

 

Overview

        LZB Series Variable-area Flow meter mainly applies to areas like chemistry, oil industry, light industry,medicine, chemical fertilizer industry, food industry,dye industry, environmental protection, and scientific research. They are used to measure the flow rate of unidirectional non-impulse fluid (liquid or gas).

        Corrosion resistance flow meter are mostly applied in cases of corrosive liquid and gas, such as strong acid (except for hydrofluoric acid), strong alkali, oxidizer, strong oxidizing acid and organic solvent.

Characteristics

 

1).Small pressure loss
 
2).Reliable performance, easy and convenient to read
 
3).Simple structure, convenient to install and serviced
 
4).Low and reasonable price

 

 

Principles and structures

 

        The most important measuring component of flowmeter is a vertical-installed taperedglass pipe with a floater that is free to move up and down. When fluid moves throughthe flowmeter from bottom to top, pressure difference will be generated between thefluid above the floater and the fluid below it, under which the float will ascend. Whenthis ascending force, the buoyancy force and viscosity force equal the gravity of the
float, the float will stop at this equilibrium position. Therefore, the flow rate throughthe flow meter is relevant to the height of the float and the cutting area of the flowmeter. So the position of the float can be used to indicate the flow rate.

 

Model specifications and technique data

Ordinary type

LZB-2

LZB-3

Model

LZB-4

LZB-6

LZB-10

φ2

φ3

Diameter(mm)

φ4

φ6

φ10

≤1

≤1

Working pressure(MPa)

≤1

≤1

≤1

±4

±4

Accuracy(%FS)

±4

±4

±4

1:10

1:10

Range ability

1:10

1:10

1:10

0.4~4

2.5~25

Liquid

ml/min

Measuring

Range

Liquid

l/h

1~10

2.5~25

6~60

0.6~6

4~40

1.6~16

4~40

10~100

1~10

6~60

2.5~25

6~60

16~160

1.6~16

10~100

6~60

40~400

Air

ml/min

Air

l/h

16~160

40~400

100~1000

10-100

60~600

25~250

60~600

160~1600

16~160

100~1000

25~250

160~1600

40~400

100~1000

250~2500

 

Notes: 1). The above flow meter with (DN 2-10mm)is side to side, hose, or threaded connection, bottom substrate is

with aciculiform flow control valve. DN≥15MM is flange, vertically installed, without valve.

 

 

 

Model

LZB-15

LZB-25

LZB-40

LZB-50

LZB-80

LZB-100

Diameter(mm)

φ15

φ25

φ40

φ50

φ80

φ100

Working pressure(Mpa)

≤0.6

≤0.6

≤0.6

≤0.6

≤0.4

≤0.4

Accuracy(%FS)

±2.5

±1.5

±1.5

±1.5

±1.5

±1.5

Range ability

1:10

1:10

1:10

1:10

1:10,1:5

1:5

Measuring

Range

Liquid

m3/h

0.016~0.16

0.04~0.4

 ~

0.4~4

1~10

5~25

0.025~0.25

0.06~0.6

0.16~1.6

0.6~6

1.6~16

8~40

0.04~0.4

0.1~1

0.25~2.5

1~10

7~30

12~60

Air

m3/h

0.25~2.5

1~10

4~40

10~100

50~250

120~600

0.4~4.0

1.6~16

6~60

16~160

80~400

200~1000

0.6~6.0

2.5~25

 ~

 ~

 ~

~ 

 

Notes: 1)  Liquid flow of LZB Series Variable-area flow meter is calibrated in the circumstance of 20℃ water. gas flow is calibrated in the circumstance of 20℃,101325Pa Air

           2)  According to the customer's needs,special flow meter can also be made. The biggest water flow of DN100 can be 120 m3/h, the biggest gas flow can be 3500 m3/h, special density correction calibration and pressure correction calibration based on specific operation can also be made. 

Corrosion resistance type

Model

LZB-15F

LZB-25F

LZB-40F

LZB-50F

LZB-80F

LZB-100F

Diameter(mm)

φ15

φ25

φ40

φ50

φ80

φ100

Working pressure(Mpa)

≤0.6

≤0.6

≤0.6

≤0.6

≤0.4

≤0.4

Accuracy(%FS)

±4

±2.5

±2.5

±2.5

±2.5

±2.5

Range ability

1:10

1:10

1:10

1:10

1:10,1:5

1:5

 

Measuring

Range

 

 

Liquid

m3/h

 

0.016~0.16

0.04~0.4

 ~

 ~

 ~

~ 

0.025~0.25

0.06~0.6

0.16~1.6

0.4~4

1~10

5~25

0.04~0.4

0.1~1

0.25~2.5

0.6~6

1.6~16

8~40

 

Air

m3/h

 

0.25~2.5

1~10

 ~

~ 

~ 

 ~

0.4~4.0

1.6~16

4~40

10~100

50~250

120~600

0.6~6.0

2.5~25

6~60

16~160

80~400

200~1000

Notes: 1). Corrosion resistance type with DN≤10 mm can be custom made,generally without aciculiform control valve.

           2). The Corrosion resistance flow meter with higher precision can be custom made.

 

 

 

Flow meter and parts'materials contacting measured medium

Ordinary type

LZB-2  LZB-3  LZB-4  LZB-6  LZB-10    

        Substrate & valve

        needle

Stop shaft Floater Stuffing box packing
Chromium plated brass PTFE

agate ball or

(304)stainless stee

Acid-proof alkali

rubber(1V-1)

 

 

 

LZB-15  LZB-25  LZB-40  
Flange Stop shaft Floater or guide rod Stuffing box packing

Cast iron lining

Acid-proof alkali

rubber(1V-1)

PTEE (304)stainless steel

Acid-proof alkali

rubber(Ⅳ-1)

 

 

 

 
 
LZB-50  LZB-80  LZB-100
Flange Stop shaft Floater or guide rod Stuffing box packing

Amino baking paint

      inside cast iron

 

Amino baking paint

      inside cast iron

 

(304)stainless steel

Acid-proof alkali

rubber(Ⅳ-1)

Notes:All the material of diameter flow meter's tapered glass pipe is HBG(same below)

 
 
Stainless steel type LZB-口口B or LZB-口口BO
 
Flange,Substrate,valve,floater,guide rod,base plate,housing or bolt are all stainless
steel,Model:LZB-口 口 B.   DN ≤ 10 mm,stainless over current material can be 316L
Stainless,Model:LZB-2 ~10B0,can be custom made.
 
Corrosion resistance type LZB-口口F or LZB-口口F/B
 
DN 2-10 adopts PTFE Substrate, DN15-100 adopts cast iron flange lining
PTFE, Model: LZB-口口F;
If DN15-100 adopts stainless flange lining PTFE, then it can be stainless
corrosion resistance type. Model LZB-口口F/B, needs to be custom made.
 

 

  

 

diameter

Size(mm)

A

B

C

D

E

2

110

132

150

M8×1  

31×26(front)

3

110

132

150

M8×1

31×26(front)

4

170

208

238

φ11

40×34(front)

6

170

208

238

φ11

40×34(front)

10

170

208

238

φ11

40×34(front)

 


diameter

Size(mm)

A

B

C

D

E

15

φ95

φ65

470

φ15

4-φ14

25

φ115

φ85

470

φ25

4-φ14

40

φ145

φ110

570

φ40

4-φ18

50

φ160

φ125

570

φ50

4-φ18

80

φ185

φ150

660

φ80

4-φ18

100

φ205

φ170

660

φ100

4-φ18

 

Notes : When the products need to match other products, we can do special design to change the
              configuration and size to meet customer's requirement.