In industrial flow measurement, choosing the right technology is key to getting the accuracy, efficiency, and long-term performance you need.
Two of the most common flow measurement technologies in use today are the Magnetic Flow Meter (Mag Meter) and the Oval Gear Flow Meter. While each has its role across different applications, the Macnaught MX Oval Gear Flow Meter consistently comes out on top for clean process fluids, pinpoint accuracy, and fast, reliable delivery. In this blog, we’ll walk you through the key differences between magnetic and oval gear flow meters, and show why Macnaught is the go-to choice for engineers and facility managers across Australia & beyo.
Understanding the Basics: Magnetic Flow Meters vs Oval Gear Flow Meters
Magnetic Flow Meters (Mag Meters)
Magnetic flow meters operate on Faraday’s Law of Electromagnetic Induction, meaning they’re suited exclusively to conductive fluids, typically water-based. They’re widely used for measuring wastewater, slurries, and corrosive liquids.
Pros:
- No moving parts
- Low maintenance
- Suitable for conductive fluids
Cons:
- Not suitable for non-conductive fluids like oils, hydrocarbons, or solvents
- Requires grounding and careful installation
- Limited accuracy with low-viscosity, clean process fluids
- Flow Conditioning - Average Upstream requires 5 pipe diameters
- Downstream requires 2-3 pipe diameters
Oval Gear Flow Meters
Oval gear meters use positive displacement tech, with interlocking gears turning as the fluid flows through. They’re a top pick for accurately measuring clean, viscous, and non-conductive liquids — delivering spot-on results every time.
Pros:
- Accurate measurement of both low- and high-viscosity fluids
- Works with clean, non-conductive liquids like oils, fuels, and chemicals
- No need for conductivity or flow conditioning
- Ideal for batching and dispensing
- No Flow Conditioning Required – perfect for tight spaces
Cons:
- Contains moving parts (though durable)
- May not be ideal for slurries or fluids with particulate
Ready to order or need technical support?
FLOW METER HOTLINE - 1300 840 042
Contact Macnaught today and get your flow meter solution shipped fast.
FLOW METER HOTLINE - 1300 840 042
Contact Macnaught today and get your flow meter solution shipped fast.
Why Choose Macnaught’s MX Oval Gear Flow Meter?
When it comes to clean process fluids, the Macnaught MX Series stands above the competition. Here's why:
✅ Superior Accuracy and Reliability
The Macnaught MX Oval Gear Flow Meter delivers .5% Volumetric Accuracy with .03% Repeatability of flow
Inline sizes from ¼” thru 4” in sizing with .5 LPH to 2500 LPM in Flow Ranges +
✅ Ideal for Clean Fluids
Unlike magnetic flow meters which require conductive fluids, Macnaught Flowmeters measure most clean process fluids including;
Oils, Fuels, Solvents, Glycols, High Viscosity Medias, Water and a wide range of other fluid chemistries.
✅ No Flow Conditioning and Install Flexibility
Macnaught meters need no upstream or downstream pipe lengths, making them ideal for OEM and industrial setups where space is tight. They come standard with FNPT connections, and you can easily fit them out with whatever you need — from any type of flange to cam locks, NPT, elbows, and more.
✅ Durable, Low-Maintenance Design
The Macnaught MX is built tough, with a modular, fully repairable design that cuts downtime and keeps long-term maintenance costs down. CNC-machined from solid aluminium or stainless steel, these meters are made to go the distance and deliver rock-solid reliability in the harshest industrial environments.
✅ Huge Inventory Ready to Ship
Time is money. That’s why Macnaught stocks one of the largest inventories of MX Oval Gear Flow Meters in Australia, with fast turnaround times. When your operation can’t afford delays, you can count on Macnaught to deliver—quickly and reliably.
✅ Backed by Industry-Leading Support
Backed by over 75 years of engineering expertise and a solid reputation for quality, Macnaught delivers unmatched technical support and service, helping customers get the best out of their flow measurement systems.
Where the Macnaught MX Really Delivers on Performance
- Diesel Fuel Measurement and Consumption
- Hazard Rated Fluids C1D1, C1D2, Simple Safe
- Batching Applications
- Oil and Lubrication Metering
- Glycols of all types
- Epoxies and Adhesives
If you work with clean process fluids, the Macnaught MX should be your flow meter of choice.
Make the Smart Switch
While magnetic flow meters still have their place for applications with conductive fluids, they struggle with precise measurement of clean, non-conductive process liquids. The Macnaught MX Oval Gear Flow Meter delivers the accuracy, durability, and versatility today’s industries demand — with stock on hand and ready to ship straight from Macnaught.
Don’t wait weeks for a meter that might not fit your needs. Choose Macnaught MX and experience fast shipping, high performance, and unmatched quality.
Ready to order or need technical support?
CALL OUR FLOW METER HOTLINE - 1300 840 042
Contact Macnaught today and get your flow meter solution shipped fast.
CALL OUR FLOW METER HOTLINE - 1300 840 042
Contact Macnaught today and get your flow meter solution shipped fast.
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