What is a liquid flow meter?
A liquid flow meter is a kind of meter that measures the flow of liquid fluid in pipes or open channels. Liquid flow meters can effectively monitor liquid flow rates for water, fuels, chemicals and more fluids.
If you need to purchase a Liquid Flow Meter, this article will be your best Purchasing Guide. Keep reading, Please!
Flow meters are classified into liquid flow meters and gas flow meters according to the medium. Then the common liquid flow meters mainly include: vortex flowmeter, turbine flowmeter, electromagnetic flowmeter, ultrasonic flowmeter, differential pressure flowmeter, open channel flowmeter, Coriolis mass flowmeter, etc.
Sino-Inst offers a variety of Liquid Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.
Featured Liquid Flow Meters
Liquid Flow Meter Types
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Liquid Flow Meters Selection Guide
If from the upper part of this article, you do not know how to choose a suitable liquid flow meter. Then, you can follow our selection suggestions below.
Step 1: Confirm your liquid condition.
Before choosing a flow meter, you should sort out the details of your measured liquid.
- Liquid name
- Liquid temperature
- Pipeline pressure
- Liquid viscosity
- Flow rate range
- Pipe diameter
If you need to measure liquids under special circumstances, you can skip to the following:
Low temperature: Gear flow meter: High and low-temperature resistance (-196℃-200℃).
High viscosity: Oval Gear High Viscosity Flow Meter
Fuel: Industrial Fuel Flow Meters
Step 2: Identify your measurement needs.
The flow meter is designed to meet your measurement needs. Therefore, according to your needs, determine the function of the flowmeter. such as:
- Measure volume flow or mass flow?
- Is it necessary to display the instantaneous flow and cumulative flow locally?
- What kind of signal output is needed? 4-20mA? Pulse?
- What kind of installation form and size are planned? Such as ANSI150 flange? Outside clip?
Most liquid flow meters measure volumetric flow. If what you need is mass flow, you can jump to: Mass Flow Meters
If you are unwilling to change the pipeline, you can only choose to install the ultrasonic flowmeter with an external clamp.
Step 3: select the appropriate flow meter type.
Up to now, there may be many types of flow meters suitable for your measurement situation. Then you need to filter the flowmeter according to your pipe diameter and flow range.
For example, you need to measure the flow of milk. 2-inch pipe. Then you can refer to the flow range to select the appropriate flow meter.
2 inches, electromagnetic flowmeter, 2.21~35.35m³/h;
2 inches, turbine flowmeter, 4~40m3/h.
For example, what you need to measure is the water flow of a DN1000 pipeline. Then it is recommended that you choose the insertion electromagnetic flowmeter.
Step 4: Except for dedicated flow meters.
Under normal circumstances, when measuring some specific media, we will recommend a specific type of flowmeter.
Measure sewage, use an electromagnetic flowmeter.
To measure diesel oil, use a turbine flowmeter.
Step 5: Contact the manufacturer
The above liquid flow meter selection steps and selection suggestions are based on certain experiences.
If you are a newcomer, you are not sure about the above process. You can directly contact Sino-Inst sales engineers. We will provide you with the best advice.
Step 6: Combine the budget
According to your budget, choose the right liquid flow meter.
For example, you need to measure the water flow. Normally, you can choose an electromagnetic flowmeter or ultrasonic flowmeter. Then you can choose according to your budget.
Such as 2inch pipeline, DN50 electromagnetic flowmeter, USD 484.50/pc
With external clamp ultrasonic flowmeter, USD 423.00/pc
For example, 4inch pipe, DN50 electromagnetic flowmeter, USD 784.50/pc
With external clamp ultrasonic flowmeter, USD 423.00/pc
Of course, the above is our experience. It’s not absolute.
You may need the following traffic conversion tools to help you.
Extended reading: U-series Liquid Mass Flow Meter | Liquid-slurry flow measure
Liquid Flow Tools
Converters for conversion and calculation of flow. Or a calculation tool that requires flow measurement to obtain other measurement parameters. Help users choose the right flow sensor and transmitter!
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How does a liquid flow meter work?
Liquid flow meter can be divided into the following categories according to the measurement principle:
Mechanics principles: instruments that fall into this category include differential pressure type and rotor type using Bernoulli’s theorem; impulse type and movable tube type using momentum theorem; direct mass type using Newton’s second law; using fluid momentum principle Target type; turbine type using the angular momentum theorem; vortex type and vortex type using the principle of fluid oscillation; pitot tube type using total static pressure difference, volume type, weir, trough type, etc.
Electrical principle: The instruments used for this kind of principle include electromagnetic, differential capacitive, inductive, strain resistance, etc.
Acoustic principle: There is an ultrasonic method for flow measurement using the acoustic principle. Acoustic (shock wave) etc. Thermal principle: There are calorimetric, direct calorimetry, indirect calorimetry, etc. that use the thermal principle to measure flow. Optical principle: laser type, photoelectric type, etc. are instruments of this type of principle. Principles of atomic physics: nuclear magnetic resonance, nuclear radiation, etc. are instruments that belong to this type of principle. Other principles: There are marking principles (tracing principles, nuclear magnetic resonance principles), related principles, etc.
What is a flow meter used for?
A meter that indicates the measured flow rate and/or the total amount of fluid in a selected time interval. Simply put, it is an instrument used to measure fluid flow in pipes or open channels.
Where should a flow meter be placed?
Most in-line flow meters are inline flow meters. They are all connected with the pipeline under test. Connect by flange, thread, etc.
The Insertion flowmeter is installed on the pipe under test by plug-in type. Suitable for larger pipe diameters.
Clamp-on flowmeter. The sensor is clamped outside the pipe for flow measurement.
Sino-Inst offers over 30 Liquid Flow Meters products. About 50% of these are differential pressure flow meters. 40% are water meters (like the Insertion Turbine Flow Meter), and 40% are water treatment (like the Annubar flow meter ).
A wide variety of Liquid Flow Meters options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Liquid Flow Meters, located in China.
The top supplying country is China (Mainland), which supply 100% of the Liquid Flow Meters respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Liquid Flow Meters products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
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Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.