Flow meter

Introduction When selecting a flow meter, many engineers and buyers face the same question: Should I choose an electromagnetic flow meter or a Coriolis mass flow meter? Some people think: “Magnetic flow meters are cheaper, so they must be the better choice.” Others believe: “Coriolis flow meters are more accurate, so they are always the […]

How to Select the Right Magnetic Flow Meter? Insights from 28 Years of Industrial Instrumentation Experience Is an Electromagnetic Flow Meter Only Suitable for Water Measurement? After working in the instrumentation industry for more than 28 years, I have noticed that many customers have a common misunderstanding when they first select an electromagnetic flow meter:

Introduction Many engineers know that a Venturi flow meter works by measuring the differential pressure generated between the inlet section and the throat section. However, when it comes to special applications — such as high-pressure oxygen, dirty gas, slurry, black water, or systems with limited installation space — one important design question often appears: Should

If you still think a flow meter is just an “industrial water meter” that only measures flow rate, you may be missing the biggest transformation happening in industrial instrumentation. Today’s flow meters are evolving from simple measurement devices into intelligent industrial assets. They are becoming connected, self-diagnosing, and increasingly integrated with automation systems, cloud platforms,

The flowmeter may look the same, but the logic behind selecting one has changed dramatically. Ten years ago, if you walked into the instrumentation room of a chemical plant, you would see rows of orifice plates, vortex flowmeters, and variable area meters. Engineers carried thick selection manuals, turning to page 387 and checking boxes one

Electromagnetic flow meters are widely used in the chemical industry because they provide reliable measurement with no moving parts and minimal pressure loss. Based on Faraday’s Law of Electromagnetic Induction, they are suitable only for conductive liquids and slurries. For chemical applications, proper selection depends on five key factors: Medium conductivity Liner material compatibility Electrode

1. Introduction Electromagnetic flowmeters are widely used in water treatment, chemical, and industrial applications due to their high accuracy and reliability. However, in real field applications, users may occasionally encounter alarms such as: Empty Pipe Detection (EPD) Excitation Fault (EXC / EXT ERR) Unstable readings or signal loss This article shares a real field case

Project Background A customer in Taiwan required two inline thermal mass flow meters for industrial gas monitoring applications. The project involved different gases and operating conditions, including nitrogen (N₂) and natural gas measurement. The customer required: Stable low-flow gas measurement Compact inline installation RS485 communication Explosion-proof protection Local LCD display with totalizer High temperature resistance

Selecting a reliable flow meter for large diameter circulating water pipelines (starting from DN400 and extending to DN2000 or even larger) has never been an easy task. For small and medium pipe sizes (generally below DN400), electromagnetic flow meters are usually the preferred choice because they offer a good balance between accuracy and reliability. If

Why Some Electromagnetic Flowmeters Become Unstable Over Time? Many engineers focus on lining material, electrode type, or brand when selecting an electromagnetic flowmeter. However, in real industrial applications, one hidden factor often determines long-term stability and accuracy: 👉 Excitation Mode A wrong excitation type can lead to: Zero drift Unstable readings Noise interference Frequent maintenance