Libelium MySignals SW - Spirometer

-176- v2.9
Sensors
7.1.8. Spirometer
Note: Spirometer Air Capacity Sensor is temporarily unavailable. Price already discounted from the total price of
the Kit.
Spirometry (meaning the measuring of breath) is the most common of the pulmonary function tests (PFTs),
measuring lung function, specically the amount (volume) and/or speed (ow) of air that can be inhaled and
exhaled. Spirometry is an important tool used for generating pneumotachographs, which are helpful in assessing
conditions such as asthma, pulmonary brosis, cystic brosis, and COPD.
7.1.8.1. Sensor features
Description: MySignals Spirometer Peak Flow Meter is a hand-held pulmonary function measuring device that
measures your maximum possible exhalation which is called peak expiratory ow (PEF) and forced expiratory
volume in 1 second (FEV1).
Forced expiratory ow (FEF)
Forced expiratory ow (FEF) is the ow (or speed) of air coming out of the lung during the middle portion of a
forced expiration.
Forced expiratory volume in 1 second (FEV1)
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration. Average values for
FEV1 in healthy people depend mainly on sex and age, according to the diagram at left. Values of between 80%
and 120% of the average value are considered normal.
Figure: Spirometer sensor
It is suitable for children through adults who are capable of following the instructions for use. Because the Meter
has an automatic memory, you can take the Meter with you the next time you connect to MySignals board for a
review of many readings.
Accuracy requirement
Volume range 0.01L~9.99L Airow range 50 L/min ~900L/min
Volume accuracy ±0.050L or ±3% Airow accuracy ±10% or ±20L/min
Resolution
Volume resolution 0.01L Airow resolution 1L/min