Patent ID: 9267858
Filing Date: 2016-02-23
CPC Classification: G01L

Claim Text:
1. A differential pressure sensor comprising: a sensor chip provided with at least a sensor housing having a first connecting member, connected to the first face of the sensor chip, having a first connecting hole that is connected to the first pressure guiding hole; a second connecting member, connected to the second face of the sensor chip, having a second connecting hole that is connected to the second pressure guiding hole; a first pressure guiding tube, having one end that is secured in the first connecting hole of the first connecting member, and the other end secured in the first pressure guiding duct of the sensor housing; and a second pressure guiding tube, having one end that is secured in the second connecting hole of the second connecting member, and the other end secured in the second pressure guiding duct of the sensor housing, wherein a first pressure transmitting medium, which guides the first fluid pressure to the one side of the sensor diaphragm, is sealed in the tube of the first pressure guiding tube, as a portion of a sealed chamber, a second pressure transmitting medium, which guides the second fluid pressure to the other side of the sensor diaphragm, is sealed in the tube of the second pressure guiding tube, as a portion of a sealed chamber, a first space of the first connecting member connecting to the first connecting hole to the first face of the sensor chip, wherein the first space is wider than an opening of the first pressure guiding hole, and a second space of the second connecting member connecting to the second connecting hole to the second face of the sensor chip, wherein the second space is wider than an opening of the second pressure guiding hole.