Flow meter

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

Ultrasonic flow meters are highly convenient instruments, particularly suitable for measuring flow rates in large-diameter water supply pipelines. Portable ultrasonic flow meters, in particular, offer the advantage of non-invasive measurement by attaching probes to the external surface of pipes, allowing flow rate measurement without interrupting or damaging the existing pipeline. This has made them increasingly

Vortex flowmeters are widely used instruments for measuring flow in various industries, leveraging the principle of vortex shedding. The wiring methods for these flowmeters vary depending on the type of output signal (analog, digital, or pulse) and the operational environment. Below is a detailed discussion of the most common wiring methods. 1. Two-Wire Connection (4-20mA

Introduction Unexpected instrumentation failures in industrial processes can trigger cascading issues — from production interruptions to significant safety risks. Preventive maintenance plays a crucial role in identifying early signs of malfunction and mitigating potential failures before they affect operations. Flow measurement systems, widely used in chemical, petrochemical, oil & gas, water treatment, and energy industries,

In the field of instrumentation, theoretical knowledge is like the wrench in your hand – it may seem insignificant, but if it fails at a crucial moment, the consequences can be severe! Whether you’re studying for a certification exam or working in the field, concepts like circuit diagrams, sensor principles, and troubleshooting logic are foundational

A Practical Engineering Guide with Real Case Analysis In fluid control systems, both flow meters and control valves are widely used and often installed in series on the same pipeline. A key engineering question frequently arises during design: Should the flow meter be installed before or after the control valve? Although the answer may vary

Electromagnetic flow meters are among the most widely used instruments in industrial process measurement—and also among those most prone to installation-related issues. Their output signal is extremely weak and easily affected by electromagnetic interference, so proper grounding and installation are crucial to achieving accurate and stable measurement. This guide explains why grounding is essential, how