Yokogawa ADMAG AXG Magnetic Flowmeter

Overview: Total Insight Built Into Every Measurement

The Yokogawa ADMAG AXG is a high-quality, highly reliable magnetic flowmeter developed on decades of field-proven experience, enhanced by Yokogawa’s proprietary dual-frequency excitation method for stable, accurate measurement even under difficult process noise conditions. As part of Yokogawa’s ADMAG Total Insight (TI) concept, the AXG features enhanced settings for customized setups, pre-defined trend views, and multiple configuration sets accessible through a micro SD card, with built-in verification functionality that reduces total cost of ownership.

As an authorized supplier of Yokogawa flow instrumentation, Seven Star LLC sources and supplies the ADMAG AXG magnetic flowmeter to oil and gas, chemical, and water treatment facilities across Oman and the wider GCC. Because the AXG’s Total Insight diagnostic and communication features scale across a wide range of application-specific options, Seven Star LLC helps engineering teams configure the correct sensor, transmitter, and protocol combination for each measurement point.

Measurement Principle

The AXG measures flow via Faraday’s law of electromagnetic induction, with Yokogawa’s dual-frequency excitation method combining traditional high- and low-frequency excitation approaches to ensure greater stability and quicker response even when line noise or other disturbances are present. This is particularly valuable in severe applications such as aluminum slurry flow, pulp stock to a digester blow tank, or brine and caustic measurement in chlor-alkali electrolyzer cells, where a conventional single-frequency magmeter would struggle with signal stability.

Application Diagnostic functionality actively utilizes flow noise to detect specific process conditions, including gas bubble contamination, electrode corrosion, low conductivity, and slurry noise, categorizing findings into alarm states (persistent abnormal conditions) or warning states (early signs of abnormality) so operators can distinguish between an immediate problem and a developing trend. A total of 28 system and process alarms can be individually classified according to NAMUR NE107, letting each alarm be adapted to specific process requirements rather than generating unnecessary distraction for plant operators.

Engineering Design of the ADMAG AXG

The AXG flow sensor covers diameters from 0.1 to 20 inch (2.5 to 500 mm) with ceramic or PFA liner options, delivering standard accuracy of ±0.3% of rate, or high accuracy of ±0.15% of rate on sizes 1 to 8 inch (25-200mm). Explosion-proof versions are available from 0.1 to 16 inch (2.5-400mm), submersible versions from 0.5 to 20 inch (15-500mm), and hygienic versions from 0.5 to 5 inch (15-125mm), giving specifiers a version matched to nearly any installation environment or process media.

Built-in verification checks the magnetic circuit, excitation circuit, computing circuit, alarm history, and cable connection, with built-in and standard verification accurate within ±5% of factory accuracy, and enhanced verification (using peripheral devices) accurate within ±2%. Backward compatibility with the AXG4A converter allows integration with older flow sensors and existing signal/excitation cables, and worldwide approvals including explosion-proof, SIL, EMC, and NAMUR support deployment across diverse regulatory environments. The AXG is also certified NSF61 for drinking water applications and carries SIL2 certification (simplex) or SIL3 (redundant configuration) per IEC 61508.

Key Features

The Yokogawa ADMAG AXG Magnetic Flowmeter delivers accurate, richly diagnosable flow measurement. Key characteristics include:

• Dual-frequency excitation method for stable measurement under high process noise.
• Diameter range 0.1 to 20 inch (2.5 to 500 mm); accuracy up to ±0.15% of rate.
• SIL2 (simplex) / SIL3 (redundant) certification per IEC 61508; NSF61 drinking water approval.
• Application Diagnostic detecting gas bubbles, electrode corrosion, low conductivity, and slurry noise.
• Built-in, standard, and enhanced verification functions for reduced total cost of ownership.
• Explosion-proof, submersible, and hygienic versions available across the size range.
• Multiple communication protocols including EtherNet/IP, HART, Modbus, PROFIBUS PA, FOUNDATION Fieldbus.

Industrial Applications

The ADMAG AXG is deployed across oil and gas, chemical, pulp and paper, food and beverage, metal and mining, and water and wastewater applications, including chlor-alkali electrolysis, digester blow lines, CIP (clean-in-place) processes, and drinking water systems where NSF61 approval is required. Its dual-frequency excitation and Application Diagnostic functions make it particularly well suited to abrasive slurries and other severe process conditions that challenge conventional magmeters.

Seven Star LLC supports oil and gas operators, chemical plants, and water treatment facilities across Oman, Muscat, Sohar, and the broader GCC region with sourcing of Yokogawa ADMAG AXG flowmeters, helping projects achieve reliable, diagnosable flow measurement across demanding applications.

Technical Specifications

The table below summarizes the core specifications of the Yokogawa ADMAG AXG Magnetic Flowmeter as supplied by Seven Star LLC.

Call To Action

Seven Star LLC supplies the Yokogawa ADMAG AXG magnetic flowmeter with full manufacturer documentation and regional technical support. Contact our instrumentation division for a formal B2B quotation, to confirm the correct sensor size, liner, and transmitter configuration for your application, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine Yokogawa hardware, correctly specified, and backed by local support.