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A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. [1] It belongs to a class of meters called variable-area flowmeters, ...
A Thorpe tube flowmeter, a type of variable-area flowmeter, or a rotameter, is an instrument used to directly measure the flow rate of a gas in medical instruments. It consists of a connection to a gas source, a needle valve opened and closed by turning an attached dial for control of flow rate, a float resting in a clear tapered tube, and an ...
An LVDT (Linear Variable Differential Transformer) Variable Area Rotameter, is a meter designed to measure the flow rate of a fluid or gas. [citation needed]
Internal block diagram. A mass flow controller (MFC) is a device used to measure and control the flow of liquids and gases. [1] A mass flow controller is designed and calibrated to control a specific type of liquid or gas at a particular range of flow rates.
Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...
Image source: Getty Images. Social Security's earnings test limits also rose in 2025. This year, seniors who work and collect benefits will be able to earn more money without risking having a ...
Magnetic flow meter Electromagnetic flow meter Electromagnetic flow meter. A magnetic flow meter (mag meter, electromagnetic flow meter) is a transducer that measures fluid flow by the voltage induced across the liquid by its flow through a magnetic field.
A positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Positive displacement (PD) flow meters measure the volumetric flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes (finite increments or volumes of the fluid).