Electromagnetic Blood Flow Meter Wikipedia

Blood flow meters are the devices that monitor the blood flow in various blood vessels and measure the cardiac output.

Electromagnetic blood flow meter wikipedia.

The electromagnetic blood flowmeter d g wyatt the kuffield institute for medical research university of oxford ms received 4 june 1968 1 introduction during the past half century many physical principles have been used for measuring blood flow wetterer 1963 fry 1966 fry and ross 1966. The dielectric heating effect varies with the power and the frequency of the electromagnetic energy as well as the distance to the source. Khan dpur 2009 p. Flow through a large penstock such as used at a hydroelectric power plant can be measured by averaging the flow velocity over the entire area.

The electromagnetic flow meter does not leave any obstructions in the pipe so they are able to accommodate various applications from clean and conductive liquids. Propeller type current meters similar to the purely mechanical ekman current meter but now with electronic data acquisition can be traversed over the area of the penstock and velocities averaged to calculate total flow. Typical applications include medical and physiological diagnostics and research including blood sugar pulse oximetry functional neuroimaging sports medicine elite sports training ergonomics rehabilitation neonatal research brain. Compared to electromagnetic blood flow meters ultrasonic blood flow m eters do ppler b lood flow meters or transient time flow meters also m easure blood flow profiles 4 10.

Electromagnetic flow meters are very well recommended for food grade applications like juices milk municipal or industrial water etc. 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 magnetic field is applied to the metering tube which results in a potential difference proportional to the flow velocity perpendicular to the flux lines. Near infrared spectroscopy nirs is a spectroscopic method that uses the near infrared region of the electromagnetic spectrum from 780 nm to 2500 nm. The eyes and testes are particularly susceptible to radio frequency heating due to the paucity of blood flow in these areas that could otherwise dissipate the heat buildup.