Variable-area Flowmeter--宁波东驰测控技术有限公司

Add:NO.11ZhongShanDongEr Road,Lianghui Economic Development Zone Yuyao,Zhejiang,China
Tel:+86-574-62735858
+86-574-62735860
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公司各大销售处：
山东刘昌森  13705334986

广州刘小芬  13924031319

沈阳向  英 13700013012

西安向以春  13096928171

重庆任仕令  13637777265
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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）
diameter	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）
diameter	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.