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Turbine Type Liquid Flow Meter Manufacturer

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Address: No.21, Lane 697, Guangfulin Road, Songjiang District, Shanghai, China

Contact name:Nancy Zhao

Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.

Turbine Type Liquid Flow Meter Manufacturer

Country/Region	china
City & Province	shanghai shanghai
Categories	Camera Chargers

Product Details

Turbine Type Liquid Flow Meter Manufacturer

1. Introduction

LWGYML series turbine flow meter is a new generation kind of flow meter that absorbs the advanced technologies of flow meter at home and abroad. It has been optimized and designed to have so many characteristics, such as simple structure, light weight, high precision, good repeatability,easy installation and usage.

It is widely used in the sealed pipelines which doesn’t have corrosion function on SS 1Cr₁₈Ni₉Ti, 2Cr₁₃, corundum Al₂O₃ and cemented carbide and have no fiber, particle and so on. The liquid should be less than 5*10^-6m²/s with viscosity under working temperature, if the viscosity of the liquid is more than 5*10^-6m²/s, then the flow meter can be used after calibration. If it is equipped with other display devices with special functions, it can also do quantity control, excessive alarm and so on. It is really perfect in flow measurement and energy

conservation.

2. Features

High accuracy, usually reach ±1%R,±0.5%R,or even reach ±0.2%R for high-precision type.
Good repeatability, it can reach 0.05%-0.2% in short term, if regular calibration or online calibration can get an extremely high accuracy, so it is preferred in foreign trade.
Pulse signal output, it is suitable for totalizer measurement and computer connection, no zero drift,strong capacity of resisting disturbance.
High frequency signal(3-4KHz), strong signal resolution.
Wide range, middle and big diameter can reach 1:20, and small diameter can reach 1:10.
Compact structure, easy installation and maintenance.

3. Application

Turbine flowmeters are widely used in the following measurement objects: petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas and cryogenic fluids. It is widely used in the transfer and gathering stations of foreign liquefied petroleum gas, refined oil and light crude oil, and the first and last stations of large crude oil pipelines for trade settlement. In Europe and the United States, turbine flow meters are second only to orifice flow meters for natural gas measurement. In the Netherlands alone, more than 2,600 gas turbine flow meters of various sizes and pressures ranging from 0.8 MPa to 6.5 MPa are used in natural gas pipelines. Has become an excellent natural gas flow meter. Although the excellent metering characteristics of turbine flowmeters are favored by people, they give people the impression that they are made of movable parts and have a short service life. They can't help but hesitate when choosing them. After people's unremitting efforts, it should be said that the situation has improved greatly. Turbine flowmeter, as the most common flowmeter, has developed into a multi-variety, full-series, and multi-specification mass production scale. In addition to a large number of applications in the aforementioned industrial sectors, turbine flowmeters are also widely used in some special sectors, such as scientific research, national defense science and technology, and measurement sectors. The use of these fields just avoids its weaknesses (not suitable for long-term continuous use) and gives full play to Its characteristics (high precision, good repeatability, can be used in high pressure, high temperature, low temperature and micro flow conditions). In these fields, most of them are designed according to the special requirements of the tested objects. They are special instruments and are not mass-produced.

4. Turbine flow meter Advantages and Disadvantages

Turbine Meter Advantages

The cost is moderate.
Very good at clean, low viscosity fluids of moderate velocity and a steady rate.
Turndown is very good as it can read very low compared to the greatest flow.
They are reliable if put in a clean fluid especially if it has some lubricity.
AGA and API approved for custody transfers.
They do cause some pressure drop where that may be a factor such as gravity flows.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.

Turbine Meter Disadvantages

Not reliable for steam.
Bearings wear out.
Requires constant backpressure to prevent cavitation.
Accuracy adversely affected by bubbles in liquids.
Turbine meters can be used with clean liquids and gases only (may need to install a strainer upstream to prevent damage from particulates).
Not applicable for measuring corrosive fluids.
May not function properly with high viscosity fluids where the flow profile is laminar.
Cannot maintain calibration characteristics for a long time.

5. Specifications

Pipeline Diameter(mm) and Connection	4,6,10,15,20,25,32,40 Thread Connection
Pipeline Diameter(mm) and Connection	(15,20,25,32,40) 50,65,80,100,125,150,200 Flange Connection
Accuracy	±1%R,±0.5%R,±0.2%R(Special Order)
Turn Down Ratio	10:1; 15:1; 20:1
Material	304SS,316(L)SS, etc
Medium Temperature	-20℃~+110℃
Environmental Conditions	Temperature: -10℃~+55℃ Relative humidity: 5%~90% Atmospheric pressure: 86~106KPa
Power supply	Sensor:+12VDC,+24VDC(Option) Transmitter:+24VDC Local Display:3.2V Lithium Battery
Output Signal	Sensor:Pulse Frequency Signal(Low level≤0.8V, High level≥8V) Transmitter:Two Wired 4-20mA Current Signal
Signal Cable	STVPV 3x0.3(Three Wired),2x0.3(Two Wired)
Signal Cable Connection	Houseman Connector(Standard Type) Inner Thread M20x1.5(Explosion Type)
Transmission Distance	≤1000m
Explosion Proof	None(Standard Type) EXdIIBT6(Explosion Proof)
Protection Class	IP65

5. Flow Range & Work Pressure

Pipeline Diameter	Normal Flow Range (m³/h)	Extended Flow Range (m³/h)	Normal Pressure (MPa)	Pressure Rate(MPa) (Flange Connection)
DN4	0.04~0.25	0.04~0.40	6.3	12,16,25
DN6	0.10~0.60	0.06~0.60	6.3	12,16,25
DN10	0.20~1.20	0.15~1.50	6.3	12,16,25
DN15	0.60~6.00	0.40~8.00	6.3,2.5 (Flange Connection)	4.0,6.3,12,16,25
DN20	0.80~8.00	0.45~9.00	6.3,2.5 (Flange Connection)	4.0,6.3,12,16,25
DN25	1.00~10.00	0.50~10.00	6.3,2.5 (Flange Connection)	4.0,6.3,12,16,25
DN32	1.50~15.00	0.80~15.00	6.3,2.5 (Flange Connection)	4.0,6.3,12,16,25
DN40	2.00~20.00	1.00~20.00	6.3,2.5 (Flange Connection)	4.0,6.3,12,16,25
DN50	4.00~40.00	2.00~~40.00	2.5	4.0,6.3,12,16,25
DN65	7.00~70.00	4.00~70.00	2.5	4.0,6.3,12,16,25
DN80	10.00~100.00	5.00~100.00	2.5	4.0,6.3,12,16,25
DN100	20.00~200.00	10.00~200.00	1.6	4.0,6.3,12,16,25
DN125	25.00~250.00	13.00~250.00	1.6	2.5,4.0,6.3,12,16
DN150	30.00~300.00	15.00~300.00	1.6	2.5,4.0,6.3,12,16
DN200	80.00~800.00	40.00~800.00	1.6	2.5,4.0,6.3,12,16

6. Installation Dimension

According to the diameter, choose thread or flange connection to install the senor. As to installation method, please check Pic4, Pic5, Pic6.

Pic4 LWGYML-4~10 Structure & Installation Dimension Diagram

Pic5 LWGYML-15~40 Structure & Installation Dimension Diagram

Pic6 LWGYML-50~200 Structure & Installation Dimension Diagram

Pipeline Diameter	L	Thread Connection	Flange Connection
Pipeline Diameter	(mm)	G	D (mm)	d (mm)	n
DN4	295	G1/2
DN6	330	G1/2
DN10	450	G1/2
DN15	75	G1	θ65	θ14	4
DN20	80	G1	θ75	θ14	4
DN25	100	G1-1/4	θ85	θ14	4
DN32	120	G2	θ100	θ14	4
DN40	140	G2	θ110	θ18	4
DN50	150		θ125	θ18	4
DN65	170		θ145	θ18	4
DN80	200		θ160	θ18	8
DN100	220		θ180	θ18	8
DN125	250		θ210	θ25	8
DN150	300		θ250	θ25	8
DN200	360		θ295	θ25	12

7. Configuration

LWGYML Series Turbine Flow Meter Configuration
Model	LWGYML
Pipe Material	4	4mm
	6	6mm
	10	10mm
	......
	200	200mm
Model Description		N	No Display,12VDC Power Supply,Pulse Output, High Level≥8V Low Level≤0.8V
		A	No Display,4-20mA 2 Wired Current Output
		B	Local Display,Battery Operated
		C	Local Display,4-20mA 2 Wired Current Output
		C1	Local Display,RS485 Output
		C2	Local Display, HART Output
Accuracy			05	0.5 Grade
			10	1.0 Grade
Turbine Type				W	Extended Ratio
				S	Standard Ratio
Material					S	SS 304
					I	SS 316(L)
Explosion Proof						N	None
						E	Explosion Type(ExmIICT6 or ExdIIBT6)
Pressure Rate							N	Normal Pressure
							H	High Pressure
Connection Type								T	Thread Connection
								F	Flange Connection
Filter								N		None
								F		With Filter