منابع مشابه
An electromagnetic catheter-flowmeter.
An electromagnetic flowmeter incorporated into a catheter is described. The catheter is introduced into the aorta via the femoral artery. The flow sensor is located some distance below the catheter tip and is sensitive to flow at right angles to the catheter. A crater-like elevation at one end of the transducer lumen permits funnel-like connection of the transducer to the ostium of an aortic br...
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A flow meter generates flow data which contains information about each connection observed on a network from a stream of observed packets. Flow meters can be implemented in standalone measurement devices or inline on packet forwarding devices, such as routers. YAF (Yet Another Flowmeter) was created as a reference implementation of an IPFIX Metering and Exporting Process, and to provide a platf...
متن کاملA simple flowmeter for unusual gases.
A flowmeter is described which may be used to measure gas flow in experimental situations. It may be adapted for use with any gas or gas mixture and be used to provide flows as small as 50 ml min-1. A mercury-in-glass manometer (sphygmomanometer) is used to measure the gas pressure proximal to a flow restrictor (consisting of a hypodermic needle hub) and it is this pressure head which, for a gi...
متن کاملMass Flowmeter Using a Multi-sensor Chip
We report here a novel two-mode mass flowmeter that can be operated in either thermal or differential pressure mode. By combining these two complementary operating principles, the performance can be improved significantly. This flowmeter is based on a multi-sensor chip that includes a 1-D array of shear stress, pressure and temperature sensors. The multi-sensor chip can also be employed in many...
متن کاملThe Development of CPLD-Based Ultrasonic Flowmeter
The measurement principle of the transit time difference method of the ultrasonic flowmeter is presented. The hardware structure and realization method are introduced. The software function and work mode are overviewed. In order to enhancing flowmeter's precision and stability a Xilinx CoolRunner CPLD and a Texas Instruments microcontroller from MSP430 family are applied in high precision timin...
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ژورنال
عنوان ژورنال: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
سال: 1975
ISSN: 0389-2441,1880-0408
DOI: 10.2221/jcsj.10.143