Turbine Flow Meter Manufacturer, High Precision Liquid Flow Meter
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. Application
Turbine flowmeter is widely used in the following measurement
objects: petroleum, organic liquid, inorganic liquid, liquefied
gas, natural gas, gas and cryogenic fluid, etc. It is widely used
in the first and last stations of large crude oil pipelines for
trade settlement in foreign transportation and gathering stations
of LIQUEFIED petroleum gas, refined oil and light crude oil. In
Europe and the United States, turbine flowmeters are second only to
orifice flowmeters for natural gas metering. In the Netherlands
alone, more than 2,600 turbine flowmeters of various sizes with
pressure from 0.8MPa to 6.5MPa have been adopted in natural gas
pipelines. They have become excellent natural gas flowmeters.
Although the turbine flowmeter is favored by people for its
excellent metering characteristics, it gives people the impression
that it is made up of moving parts and has a short use period.
Therefore, it is inevitable to hesitate when choosing it. After
people's unremitting efforts, it should be said that the situation
has greatly improved. Turbine flowmeter as the most common
flowmeter, its products have developed a multi-variety, full
series, multi-specification mass production scale.
Turbine flowmeter in addition to the industry a large number of
applications, is widely used in some special department, such as
scientific experiments, national defense science and technology,
measurement unit, the use of these areas to avoid its weaknesses
(not suitable for long-term continuous use), give full play to its
characteristics, high precision, good repeatability, can be used
for high pressure, high temperature, low temperature and flow
conditions). In these fields, most of the structures are designed
according to the special requirements of the tested objects. They
are special instruments and are not mass-produced.
3 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 |
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. 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 |
6. Product Details
