A device used to measure the function of the respiratory system in adults and compliant children. It usually includes a spirometer with volume-sensing (e.g., rolling-seal, bellow) and flow-sensing (e.g., pneumotachometer) devices, a gas analyser for evaluat...
A device designed to graphically record the instantaneous flow (velocity) of air at the mouth or, using an integrated signal, the volume of air per breath during inspiration or expiration. This recorder consists of a resistance attachment (e.g., wire screen...