Flow meter

1. Overview of Orifice Flowmeters Orifice flowmeters, also known as differential pressure flowmeters, consist of a primary element (such as an orifice plate, nozzle, or Venturi tube) and a transmitter. Special types like quarter-circle orifice plates, segmental orifice plates, and double orifice plates are used for specific applications. Depending on the fluid characteristics (e.g., corrosive, […]

1. Key Maintenance Procedures for Rotameter Flow Meters 1.1 Pre-Maintenance Preparations Process Coordination: Coordinate with the process department and obtain written approval. Verify that maintenance operations will not disrupt production or introduce safety risks. Risk Assessment and Protection: Assess the corrosiveness, flammability, pressure, and temperature of the process medium. Wear appropriate PPE such as anti-corrosion

1. Key Factors Affecting Actual Accuracy 1.1 Fluid Properties Deviating from Ideal Conditions Viscosity and Reynolds Number EffectsStated accuracy is often based on calibration with low-viscosity fluids like water (1 mPa·s). High-viscosity media (e.g., lubricating oil at 50 mPa·s) significantly alter flow behavior: Turbine flow meters show reduced rotor speed due to increased resistance, resulting

Multiphase flow measurement is a critical technology used in industries where fluids consisting of different phases (such as gas, liquid, and solid) are transported together through pipelines. This is particularly important in the oil and gas industry, where water, oil, and gas often co-exist in extraction and production processes. Accurately measuring the flow rates of

1. Pre-Maintenance Preparation 1.1 Safety Authorization and Site Control Operational Coordination:Coordinate with the process control department to obtain written work permits and clearly define operational adjustments during maintenance. Ensure that maintenance work does not affect safe system operation. Confined Space Entry (CSE) Preparation:For meters installed underground, open the manhole cover and ventilate the space for

The risk of dust explosions is a critical concern in industries where materials such as flour, wood, metal, or plastic powders are processed or handled. Many substances that may seem harmless can create explosive dust clouds under the right conditions. Properly identifying and assessing the combustible properties of dust in a facility is essential to

In industries such as chemical processing, water treatment, energy, and food manufacturing, liquid flow measurement is a critical part of process automation. However, liquid media can vary greatly in properties—such as conductivity, viscosity, purity, or corrosiveness—so selecting the right flowmeter requires a comprehensive understanding of both the fluid and the working conditions. This guide provides

Coriolis mass flowmeters have become a cornerstone in precision flow measurement. While turbine and positive displacement (PD) flowmeters have long dominated applications demanding high repeatability and accuracy, Coriolis technology represents a significant leap forward—particularly in complex or harsh process environments. 1. Working Principle of Coriolis Mass Flowmeters Coriolis flowmeters measure mass flow directly using the

Correct installation of orifice plate flowmeters is crucial to ensuring measurement accuracy and long-term stable operation. The following sections provide a detailed procedure and key considerations for installation. 1. Pre-Installation Preparation 1.1 Verify Specifications and Model Selection Confirm that the orifice plate’s specifications (e.g., nominal diameter, pressure rating, bore size, flow direction mark) meet the

Electromagnetic flowmeters are widely used in industrial flow measurement for their accuracy, stability, and versatility. Understanding their operating principles, common issues, and best practices for installation and maintenance is essential for field engineers and maintenance professionals. This article provides a comprehensive overview based on real-world troubleshooting and frequently asked questions. 1. Working Principle of Electromagnetic