Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.
MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
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Intelligent Alcohol Turbine Flow Metre Pulse Output -20℃~+110℃ Medium Temperature
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.
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. 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 | |||||||||