Spirometer sensor for gas flow determination in respiratory gas hose useful in medicine, especially in treatment of respirator problems has much more uniform streaming profile inside sensor because of two sieves in series

摘要

Spirometer sensor for gas flow determination in a respiratory gas hose with a tubular housing (3) containing a measuring element (4) and at least one measuring wire (8,9). The streaming side of the measuring element has at least two sieves (17,18) one behind the other, each of width w = 0.3-1.5 mm.