Flow meter

Abstract Small-signal cutoff is an essential technique in industrial flow measurement used to suppress erroneous readings caused by zero drift, noise, and non-ideal process conditions.Although the phenomenon is common across all flowmeter types, the mechanisms that generate small signals differ significantly depending on measurement principle, instrument quality, environmental factors, and installation conditions.Appropriate cutoff configuration therefore […]

Selecting the proper electrode and liner materials is critical to ensure accuracy, reliability, and long service life of electromagnetic flow meters.Material choices must be made according to fluid properties such as corrosion, abrasiveness, temperature, and pressure. 1. Electrode Material Selection Principles Electrodes are in direct contact with the process fluid and serve as the signal

Typical Ranges and Their Interrelationship** Electromagnetic flowmeters rely on three key electrical characteristics—coil resistance, electrode-to-ground insulation resistance, and electrode-to-electrode resistance—to ensure stable measurement and reliable performance.Although values vary among manufacturers and models, industry consensus ranges and their significance are well established. 1. Typical Resistance Ranges 1.1 Coil Resistance The excitation coil generates an alternating magnetic

Vortex flowmeters are widely used for measuring both liquid water and steam in industrial applications.Although the fundamental measuring principle remains the same, the physical properties of the media—such as density, viscosity, temperature, and pressure—lead to significant differences in installation requirements, compensation methods, and sensor selection. This article explains the common principles and key differences between

Mass flow meters, such as Coriolis mass flow meters, require calibration of the zero point and full scale to ensure measurement accuracy. This process eliminates zero drift and range deviations, ensuring optimal performance. Below are the detailed steps and key considerations for calibration. 1. Pre-calibration Preparations 1.1 Check Operating Conditions Correct Installation: Ensure the flow

Orifice plate flowmeters are widely used in industrial flow measurement due to their simple structure and standardized design. However, because the measurement principle is based on differential pressure, their performance is highly sensitive to installation conditions, process parameters, and impulse piping systems. In practical applications, most failures can be classified into two main categories: Abnormal

In industrial plants, energy metering systems, and water or wastewater applications, inaccurate flow readings are a common complaint.Very often, the first assumption is that the flow meter itself is faulty or poorly selected. However, real field experience shows a different truth: In most cases, inaccurate flow measurement is caused by improper installation and unfavorable process

When selecting materials for acid and alkali-resistant flow meters, it’s important to consider factors such as the material of the measuring tube, electrodes, lining, and the properties of the acidic or alkaline medium, including concentration and temperature. Below is an overview of suitable materials based on these criteria. Measuring Tube Materials: Hastelloy: Known for its

In industries such as chemical, water treatment, and metallurgy, electromagnetic flowmeters have become the go-to solution for measuring conductive fluid flow, thanks to their no pressure loss, corrosion resistance, and excellent linearity. However, issues like weak signals prone to interference, improper grounding causing data drift, and installation errors affecting accuracy often challenge instrument technicians. PART 01: What is

In the field of instrumentation, theoretical knowledge is like the wrench in your hand — it might seem insignificant, but if you lack it, it can cause problems when you need it most! Whether you’re preparing for certification exams or aiming to strengthen your practical skills, understanding circuit diagrams, sensor principles, and troubleshooting logic is