Time of flow sensor with a flow parallel wire

Time of flow sensor with a flow parallel wire

A flow parallel wire (FPW) with a center tap is used in a sensor for measuring the time of flow of a heat pulse generated upstream by a heater. The upstream and downstream parts of the FPW are combined to a half bridge resulting in a large output peak when a heat pulse passes the FPW. The time betwe...

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Veröffentlicht in:Sensors and actuators. A. Physical. 2012-10, Vol.186, p.105-110
Hauptverfasser: Gerhardy, C., Schomburg, W.K.
Format: Artikel
Sprache:eng
Schlagworte:
Actuators
Flow parallel wire
Fluid dynamics
Fluid flow
Heat pulses
Insensitive to fluid properties
Recording
Sensors
Time of flow sensor
Upstream
Wire
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Beschreibung
Zusammenfassung:A flow parallel wire (FPW) with a center tap is used in a sensor for measuring the time of flow of a heat pulse generated upstream by a heater. The upstream and downstream parts of the FPW are combined to a half bridge resulting in a large output peak when a heat pulse passes the FPW. The time between generating the heat pulse and recording the peak maximum is only a weak function of the properties of the fluid.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2012.03.010