Sensing device for sensing a fluid
First Claim
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1. Sensing device for sensing a fluid, comprising:
- an inlet port for receiving the fluid;
a measurement chamber for sensing the fluid;
a fluid channel coupling the inlet port and the measurement chamber for transporting fluid from the inlet port to the measurement chamber; and
a fluid stop unit for stopping and controllably releasing the flow of fluid between the inlet port and the measurement chamber, the fluid stop unit includinga fluidic stop element configured to stop the flow of fluid between the inlet port and the measurement chamber,a venting hole arranged behind the measurement chamber with respect to a flow direction from the inlet port to the measurement chamber and coupled to the fluid channel, anda pressure control unit configured to selectively increase a pressure in a first part of the fluid channel between the inlet port and the fluidic stop element to force the fluid past the fluidic stop element, the pressure control unit being arranged at a first section of the device and being slidable between an opened position and a closed position, wherein in the opened position the inlet port is uncovered by the pressure control unit and a first pressure is present in the first part of the fluid channel, wherein in the closed position the inlet port is sealed by the pressure control unit and a second pressure is produced in the first part of the fluid channel, and wherein the second pressure is higher than the first pressure to force the fluid in the fluid channel past the fluidic stop element into the at least one measurement chamber.
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Abstract
A sensing device including an inlet port for receiving a fluid, a measurement chamber for sensing the fluid, a fluid channel coupling the inlet port and the measurement chamber for transporting the fluid from the inlet port to the measurement chamber, and a fluid stop unit for stopping and controllably releasing the flow of fluid between the inlet port and the measurement chamber.
8 Citations
10 Claims
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1. Sensing device for sensing a fluid, comprising:
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an inlet port for receiving the fluid; a measurement chamber for sensing the fluid; a fluid channel coupling the inlet port and the measurement chamber for transporting fluid from the inlet port to the measurement chamber; and a fluid stop unit for stopping and controllably releasing the flow of fluid between the inlet port and the measurement chamber, the fluid stop unit including a fluidic stop element configured to stop the flow of fluid between the inlet port and the measurement chamber, a venting hole arranged behind the measurement chamber with respect to a flow direction from the inlet port to the measurement chamber and coupled to the fluid channel, and a pressure control unit configured to selectively increase a pressure in a first part of the fluid channel between the inlet port and the fluidic stop element to force the fluid past the fluidic stop element, the pressure control unit being arranged at a first section of the device and being slidable between an opened position and a closed position, wherein in the opened position the inlet port is uncovered by the pressure control unit and a first pressure is present in the first part of the fluid channel, wherein in the closed position the inlet port is sealed by the pressure control unit and a second pressure is produced in the first part of the fluid channel, and wherein the second pressure is higher than the first pressure to force the fluid in the fluid channel past the fluidic stop element into the at least one measurement chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification