Sensing device for sensing a fluid

Sensing device for sensing a fluid

  • CN 102,257,378 B
  • Filed: 12/07/2009
  • Issued: 07/22/2015
  • Est. Priority Date: 12/18/2008
  • Status: Active Grant
First Claim
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1. , for sensing a sensing apparatus for fluid, comprising:

  • Entrance (20), for receiving fluid (100);

    Measuring chamber (25), for sensing described fluid;

    Fluid passage (30), be coupled described entrance (20) and described measuring chamber (25) for fluid is delivered to described measuring chamber (25) from described entrance (2);

    AndFluid stops unit (50;

         70), for stoping and controllably discharging the fluid flowing between described entrance (20) and described measuring chamber (25), wherein, described fluid stops unit (50;

         70) comprising;

    Fluid stops element (70), along described fluid passage (30) layout and for stoping the fluid (100) between described entrance (20) and described measuring chamber (25) to flow;

    AndPressure control unit (300;

    13;

         96), for being controlled the described pressure in the described Part I (31) of described fluid passage (30) by the pressure changed in the Part I (31) between described entrance (20) and described fluid prevention element (70) of described fluid passage (30), cross at least one fluid described to force described fluid (100) and stop element (70), wherein, described pressure control unit comprises;

    Calotte (300), be arranged in Part I (11) place comprising described entrance (20) of described device (10), described calotte (300) has release position (301) and detent position (302),Wherein, in described release position (301), described entrance (20) is not covered by described calotte (300) and there is the first pressure in the described Part I (31) of described fluid passage (30),Wherein, in described detent position (302), described entrance (20) is sealed by described calotte (300) and produce the second pressure in the described Part I (31) of described fluid passage (30), andWherein, described second pressure is greater than described first pressure, forces the described fluid (100) in described fluid passage (30) to cross described fluid and stops element (70) to enter into described at least one measuring chamber (25).

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