Portable spirometer
The present invention relates to a portable spirometer, comprising a housing and a mouthpiece being releasably connected to said housing, wherein the housing encloses a sensor unit being in fluid communication with a flow channel receiving part of a flow of exhaled or inhaled air from a main flow ch...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention relates to a portable spirometer, comprising a housing and a mouthpiece being releasably connected to said housing, wherein the housing encloses a sensor unit being in fluid communication with a flow channel receiving part of a flow of exhaled or inhaled air from a main flow channel of the mouthpiece when connected to said housing, whereby the sensor unit is configured to measure one or more characteristics of part of the flow of exhaled or inhaled air passed to the sensor unit via the mouthpiece, characterised in that said sensor unit comprises at least one digital differential pressure sensor comprising a heating element and a temperature sensor arranged upstream of the heating element and a reference temperature sensor arranged downstream of the heating element. |
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