Magnetic Flow Meters

Engineered with Exclusive Dual Frequency Design

Magnetic flow meters, also known as mag meters, are widely used in a variety of industrial field applications due to their reliable flow rate measurements and features such as low pressure loss and maintenance-free operation.

Yokogawa’s ADMAG series magnetic flow meters are designed with dual frequency excitation to achieve stable measurement, zero stability and quick response times.

Learn more about how magnetic flow meters work and the technology behind Yokogawa's ADMAG flow meters.

 

ADMAG Total Insight

Total Insight is a Yokogawa concept for optimizing operations and reducing maintenance costs through every phase of the product lifecycle. The ADMAG TI series consists of the ADMAG AXG and the ADMAG AXW electromagnetic flow meters. The ADMAG AXG is a complete redesign of the ADMAG AXF and will accommodate bore diameters from 2.5 mm up to 500 mm, while the revamped ADMAG AXW will accommodate bore diameters ranging from 25 mm to 1800 mm.

  • ADMAG AXG

    The ADMAG TI series AXG is ideal for industrial applications including oil & gas, chemical, and pulp & paper. With built-in diagnostics and exclusive PFA injection liner, the AXG provides ease of operation while reducing total cost of ownership.

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  • ADMAG AXW

    The ADMAG TI series AXW is ideal for general industrial applications including water supply and sewage. Sizes range from 1" to 72" and an assortment of lining materials are available.

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  • ADMAG AXR

    The ADMAG AXR is the world's first two-wire magnetic flow meter which employs the fluid noise free "Dual Frequency Excitation Method," achieving excellent stability for instrumentation.

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  • ADMAG CA

    ADMAG CA magnetic flow meter is excellent at measurement in ultra-low conductivity fluids down to 0.01 microS/cm, adhesive fluids, or slurry fluids.

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Details

How They Work

Faraday's Law

Magnetic flow meters consist of a detector and a converter, with the principle of the detector adopting Faraday's electromagnetic induction law. Faraday's Law states that if conductive fluid flows in a magnetic field, an electromagnetic force is generated in proportion to the fluid's flow velocity. Generally, the inner walls of a detector's measurement tube (metal pipe made of SUS, etc.) are lined with a relatively thick insulating layer to prevent the shorting of the generated electromotive force. This insulating layer is referred to as "lining." There are many kinds of lining materials available that provide corrosion and abrasion resistance to the fluids being measured.

Yokogawa's ADMAG Technology

All Yokogawa magnetic flow meters are engineered with dual frequency excitation, an innovative method that superimposes high frequencies on low frequencies, providing the best of AC and pulsed DC excitation. This technology ensures excellent flow noise immunity, fast response times, and excellent stability by utilizing the low frequency spectrum while maintaining high accuracy and high zero stability.

Resources

Overview:
  • To bring the customer a real-time monitoring and management capability, Yokogawa installed STARDOM (FCJ), flow meters, and transmitters at key points throughout the distribution network.
  • The STARDOM FCJ controllers achieved an accurate water loss management system while keeping the running costs to a minimum.
Overview:

Water Supply Treatment
FAST/TOOLS, STARDOM, Flowmeters, Liquid Analyzers

  • Bali's water treatment plant decided to employ the latest reliable control system in order to increase availability and quality of operation.
  • Centralized control system using FAST/TOOLS provides the sophisticated and flexible operation.
Application Note
Overview:

With the high temperatures, pressures, and levels of dissolved organics that are encountered, the ADMAG AXG flow meter design is ideal for use in all phases of the chemical recovery process.

Industries:
Overview:

Flow performance extends cell membrane life. Flow measurement difficulties can become so significant that to preserve the membrane from damage, some chlorine manufacturers turn to managing the flow manually. Yokogawa's ADMAG AXG flowmeters eliminate those concerns by...

Industries:
Overview:

The condiment facility staff had success with Yokogawa’s ADMAG TI AXG magnetic flowmeters in other applications. When they learned EtherNet/IP communication was now offered on the ADMAG TI - AXG, they chose to use the Yokogawa magmeter solution on the mustard grinding lines.

Industries:
Overview:

Magnetic Flowmeter dual frequency excitation provides immunity to slurry noise by good stability and accuracy, determining the maintenance timing can be recognized by monitoring of electrodes.

Industries:
Overview:

Accurate and durable magnetic flow meters (magmeters) were difficult to maintain in the process as the corrosive and abrasive nature of the process degraded their operation. That led to leaks that not only reduced the flow but also contaminated the product and the magmeters. Since Sigura maintained strong vigilance, the company needed to replace some magmeters monthly...

Industries:
Overview:

Yokogawa’s ADMAG TI - AXG magnetic flowmeter (magmeter) with EtherNet/IP is used to measure the water moving from the pump to the snow cannons. The accurate measurement allows the operator to monitor and control the water in the mixture to produce artificial snow with the perfect consistency.

Overview:

The ADMAG AXR employs the patented “Dual Frequency Excitation Method.” This unique technology combines the best properties of low-frequency excitation to enable a stable measurement and high-frequency excitation to deliver excellent noise immunity. As a result, the AXR can suppress process-generated noise to secure zero stability without sacrificing fast response time. In addition, the AXR achieves the same level of noise immunity as a 4-wire circuit under varying fluid conditions and delivers the performance necessary to meet the requirements for control loop applications.

Application Note
Overview:

Yokogawa's ceramic liner can offer the customer superior resistance to thermal shock and the failure that can occur due to liner cracking. This is due to Yokogawa's use of 99.9% pure Al2O3 for the liner.

Industries:
Overview:

This paper introduces the ADMAG AXR 2-wire magnetic flomwmeter solution for dust collection water application of steel converter.

Industries:
Overview:

The slurry measurement is one of the most challenging application for magmeter. In this paper, Yokogawa's solution and expected benefit in aluminum slurry applications will be introduced. ADMAG magnetic flow meter series delivers fit-for-purpose solutions for the difficult applications in mining industry.

Industries:
Application Note
Overview:

In order to reduce emissions of air pollutants such as sulfur oxides (SOx) and nitrogen oxides (NOx), power plants have installed flue gas desulfurization systems known as scrubbers.

Overview:

The control of the world's water resource is arguably one of the most important issues. Water demand from industry and domestic users is set to rise throughout the industrialized world. Yokogawa has been applying minimized maintenance measurement systems.

Overview:

The use of recycled oil as an energy source presents a significant processing problem. ADMAG CA has been shown to provide reliable and stable flow measurement of recycled oil containing water.

Industries:
Yokogawa Technical Report
Overview:

More than half a century has passed since Yokogawa developed Japan's first magnetic flow meter for industrial use in 1955, and today, Yokogawa's magnetic flow meters are widely used in a variety of applications thanks to features such as low pressure loss and maintenance-free operation due to no obstacles and moving parts in the fluid flowing pipeline.

Yokogawa Technical Report
Overview:

After having undergone several improvements, magnetic flow meters have become highly accurate and reliable and are widely used in the industrial instrument field today. Magnetic flow meters consist of a detector and a converter, with the principle of the detector adopting Faraday's electromagnetic induction law.

Yokogawa Technical Report
Overview:

In 1988, Yokogawa launched the ADMAG series of magnetic flow meters with increased resistance to fluid noise and zero stability, employing dual frequency excitation which was developed based on its long-cultivated technology for flow measurement. Since then, the ADMAG family has augmented its application range with such models as explosion-proof and integral types, and a capacitance type.

Overview:

Control Engineering Asia, March 2012

Enabling the operational benefits of two-wire magnetic flow meters while maintaining the performance levels associated with traditional four-wire devices.

Overview:

Recent or pending air pollution legislation to reduce the amount of air pollutants is increasing worldwide. In the U.S., The Clean Air Act address numerous air quality problems. One of these problems is acid rain (much of which falls in Canada) caused by sulfur dioxide and nitrogen oxide emissions from fossil-fueled power plants and other industrial and transportation sources.

They help remove stray energy or noise as it builds up in the flow process by grounding it. They can even help protect the magmeter liner from damage in harsher processes.
Edition 1
Overview:

They help remove stray energy or noise as it builds up in the flow process by grounding it. They can even help protect the magmeter liner from damage in harsher processes.

Downloads

Instruction Manuals
Technical Information

Videos

Overview:

This video explains how to open .eds files in Studio 5000. The Yokogawa Magnetic Flow Meter ADMAG TI - AXG with EtherNet/IP is used as an example.

Overview:

This video shows steps to bring the Studio 5000 Data Points into the FactoryTalk View Studio. The Yokogawa Magnetic Flow Meter ADMAG IT - AXG with EtherNet/IP is shown as an example.

Overview:

This video describes the process of connecting the Yokogawa Magnetic Flow Meter ADMAG TI - AXG with EtherNet/IP to a webserver

Overview:

This webinar will explore the fundamentals of flow measurement technologies and how they stack up in different applications.

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