Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.
MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
Add to Cart
4-20mA Digital Turbine Type Flow Meter DN80 Compact Structure Easy Installation
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
3. Application
Turbine flowmeter is widely used in the following measurement objects: petroleum, organic liquid, inorganic liquid, liquefied gas, natural gas, gas and cryogenic fluid. It is widely used in foreign LPG, refined oil and light crude oil transfer and gathering stations, as well as in the initial and terminal stations of large crude oil pipelines for trade settlement. In Europe and the United States, turbine flowmeter is second only to orifice flowmeter for natural gas metering. Holland alone has adopted more than 2600 gas turbine flowmeters with various sizes and pressures ranging from 0.8MPa to 6.5MPa on natural gas pipelines. They have become excellent natural gas flow meters. Although the excellent metering characteristics of turbine flowmeter are favored by people, it gives the impression that it is composed of moving parts with short service life, which makes it hesitant to select it. After unremitting efforts, it should be said that the situation has been greatly improved. As the most common flowmeter, turbine flowmeter has been developed into a large scale of multi variety, full series and multi specification batch production.
Turbine flowmeter is widely used in some special departments, such as scientific research and experiment department, national defense science and technology department and measurement department. The use of these fields just avoids its weakness (not suitable for long-term continuous use), and gives full play to its characteristics (high precision, good repeatability, and 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 object. They are special instruments and do not carry out mass production.
4. Specifications
| Pipeline Diameter(mm) and Connection | 4,6,10,15,20,25,32,40 Thread 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 | ||
| (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 | |||||||||