Flow meter

Vortex flow meters, based on the Kármán vortex street principle, are widely used for measuring the flow of industrial fluids—gas, liquid, and steam. Proper installation and routine maintenance are crucial to ensuring their measurement accuracy and prolonging operational lifespan. This document outlines detailed guidelines for installation, daily inspection, and maintenance. 1. Installation Guidelines 1.1 Pre-Installation […]

1. Basic Principle Differential pressure (DP) flow meters operate based on the throttling principle derived from Bernoulli’s equation. As fluid flows through a restriction (e.g., orifice plate, nozzle, or Venturi tube), its velocity increases and static pressure decreases, creating a pressure differential (ΔP) that correlates to flow rate. Working Formula: Where: Q = volumetric flow

Variable area flow meters, commonly known as rotameters or float flow meters, are widely used for measuring small and medium flow rates of liquids, gases, and steam. This guide outlines key installation precautions and selection criteria to help avoid common errors and ensure optimal performance. 1. Installation Guidelines To ensure accurate measurement and long-term reliability,

1. What Is Temperature and Pressure Compensation? Temperature and pressure compensation refers to the process of correcting flow measurements by accounting for real-time temperature and pressure deviations from standard conditions. These two factors—temperature and pressure—have significant influence on gas and steam flow readings. To achieve accurate flow measurement results, it is essential to apply compensation

Three-Checks & Four-Fixes for Flow Meters This document outlines key inspection points during flow meter installation. Adhering to these guidelines ensures long-term reliability, accuracy, and safety of the instrumentation in industrial environments. I. Mechanical Installation Checks Temporary Gasket Installation Temporary gaskets must be used during initial installation to prevent damage to flange sealing surfaces. Flow

When the values displayed by the DCS (Distributed Control System) differ from those shown on the field instruments, it raises concerns about the accuracy of system performance, affecting both safety and operational stability. Here’s a detailed analysis of potential causes and corresponding solutions for this issue: 1. Sensor Malfunction or Failure Field sensors might experience

The LNG gasification and pressure regulation skid is a natural gas supply system designed for medium and small-sized enterprises and large public buildings. It is widely used for emergency gas supply, residential community gas supply, and industrial production gas supply. The gasification and pressure regulation process consists of two main parts: the gasification of LNG

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