Flow meter

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

Steam, as a critical energy carrier, finds extensive application in industrial heating, power generation, and production processes. This article provides a comprehensive overview of steam types, quality, measurement methods, common challenges, and associated instruments. 1. Types of Steam Steam can be classified into several types based on its pressure, temperature, and state: Saturated Steam Produced

Introduction: A common issue in flow measurement systems is the occurrence of small readings even when no flow is present. This phenomenon, caused by zero drift in the meter, can lead to inaccurate data, false alarms, and interference with control systems. The small signal cut-off feature is designed to address this issue by eliminating these

1. Introduction The V-cone flow meter—also known as an internal-cone or V-type cone flow meter—is an advanced differential-pressure flow measurement device first developed in the 1980s. Its introduction is widely regarded as a breakthrough in differential-pressure technology due to its unique throttling structure and exceptional measurement stability. Designed for liquids, gases, and steam, the V-cone

OverviewExpanding the range of flowmeters is a common requirement in industrial measurement, especially when process parameters change or equipment is upgraded. The methods for extending the range vary depending on the type of flowmeter (e.g., turbine, electromagnetic, orifice, etc.). The impact of these methods on accuracy must be analyzed considering the principles and actual working

Introduction The performance of electromagnetic flowmeter liners under vacuum conditions directly impacts the measurement accuracy and service life of the instrument. In simple terms, the vacuum resistance of the flowmeter liner depends on two main factors: The material strength and elastic modulus of the liner. The adhesive bonding between the liner and the measuring tube

1. Working Principle of Vortex Flowmeters Vortex flowmeters operate based on the Kármán vortex street principle. The core mechanism involves detecting the frequency of vortices generated in the fluid to calculate the flow rate. Vortex Formation: In a pipeline, a non-streamlined body (such as a cylindrical or triangular pillar) is placed. As the fluid flows

Key Components of a Positive Displacement Flowmeter A positive displacement (PD) flowmeter is composed of several essential parts, each serving a distinct function: Measuring Section: This is the core of the flowmeter, consisting of a rotor, housing, and cover plate that form the measurement chamber. When fluid passes through, the rotor spins continuously, with the