Flow meter

A vortex flowmeter suddenly drops to zero. The operator calls and says: “Steam is still flowing, but the vortex meter shows nothing.” That sounds like a simple fault description. In reality, “no reading” can mean several completely different things: The local display is blank. The display is powered but instantaneous flow reads zero. The 4–20 […]

Target flow meters are widely used for measuring challenging media such as high-viscosity fluids, slurry, liquids containing particles, and media prone to scaling. Compared with conventional flow meters, they are known for their excellent resistance to harsh operating conditions. However, like any industrial instrument, target flow meters can also experience signal problems during operation. Among

Introduction A magnetic flow meter (also called an electromagnetic flow meter or mag meter) measures flow based on Faraday’s Law of Electromagnetic Induction. Because the measurement signal generated by the electrodes is only at the millivolt level, the instrument is highly sensitive to: Ground potential differences Stray currents Electrical noise Improper grounding Static electricity interference

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