A New Type of Flow Resistor for Respiratory Studies
- 1 March 1956
- journal article
- research article
- Published by American Physiological Society in Journal of Applied Physiology
- Vol. 8 (5) , 562-564
- https://doi.org/10.1152/jappl.1956.8.5.562
Abstract
A porous vitrified abrasive wheel, 1/4 inch thick and cup-shaped, has proved a satisfactory, rugged and economical flow resistor for a respiratory flowmeter. This resistor has a linear response to 200 1/minute [plus or minus] 4.2 1/minute. A simple compact flowmeter designed for use with the vitreous resistor in clinical testing of maximal expiration is described. Also presented is the circuit diagram of a polarized capacitance transducer unit to convert the pressure caused by the resistor into electrical energy recordable on a standard direct-writing ecg.Keywords
This publication has 0 references indexed in Scilit: