Flow meter

Electromagnetic flow meters are widely used for measuring the flow of conductive liquids in industries such as water treatment, chemical processing, mining, food production, and power generation. In normal operation, an electromagnetic flow meter provides a stable flow indication and sends the corresponding output signal to the control system. However, one of the common problems […]

Introduction During pipeline installation, one of the most common questions from field engineers is: “Can we simply weld the flow meter directly onto the pipeline?” Although welding may seem like a quick and convenient installation method, it is generally not recommended for most flow meters. The reason is simple: flow meters are precision measuring instruments,

Introduction In the world of industrial flow measurement, many advanced technologies have emerged in recent decades, including electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, and Coriolis mass flow meters. However, the orifice plate flow meter, one of the oldest differential pressure flow measurement technologies, is still widely used in industries such as chemical

Your pump is running. The valve is open. There is liquid in the pipeline. But the electromagnetic flow meter still reads zero. What should you check first? Some technicians immediately check the grounding connection. Others disable the empty-pipe detection function or suspect that the transmitter has failed. However, a running process does not necessarily mean

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