초록 ▼

A pressure sensing section and a sensor element are provided in a housing. A pair of coupling ports 12a and 12b are formed at both ends of the housing so as to be aligned with the piping section. A flow path is formed in approximate convex such that the first flow path which switches the flowing dir

A pressure sensing section and a sensor element are provided in a housing. A pair of coupling ports 12a and 12b are formed at both ends of the housing so as to be aligned with the piping section. A flow path is formed in approximate convex such that the first flow path which switches the flowing direction of the liquid member from an aligned piping section to the pressure sensing section, the second flow path through which the liquid member flows along the pressure sensing section, and the third flow path 13c which switches the flowing direction of the liquid member from the pressure sensing section to the aligned piping section are connected. By doing this, it is possible to provide an inline pressure sensor in which a dead volume as an undesirable liquid pool can be minimized.

대표청구항 ▼

1. An inline pressure sensor comprising:a housing having first to third liquid member flow paths formed by piping sections; a pressure sensing section disposed in the housing for contacting a liquid member flowing in the flow paths; a sensor element disposed in the housing for measuring a stress by

1. An inline pressure sensor comprising:a housing having first to third liquid member flow paths formed by piping sections; a pressure sensing section disposed in the housing for contacting a liquid member flowing in the flow paths; a sensor element disposed in the housing for measuring a stress by contacting the pressure sensing section; a pair of coupling ports disposed on both ends of the housing and connected to the flow paths, one of the flow paths in the coupling ports and one of the flow paths in the piping section being aligned; the first liquid member flow path being for switching a direction of the liquid member from the aligned flow path to the pressure sensing section; the second liquid member flow path being for flowing the liquid member along the pressure sensing section; and the third liquid member flow path being for switching a direction of the liquid member from the pressure sensing section to the aligned flow path, wherein the first liquid member flow path, the second liquid member flow path, and the third liquid member flow path are connected in an approximate convex alignment viewed in a cross section, the second liquid member flow path being formed such that a distance between a pressure sensing surface on the pressure sensing section and a surface of the housing facing the pressure sensing section is less than an inner diameter of the flow path, and the second flow path having a round shape viewed horizontally. 2. An inline pressure sensor according to claim 1 wherein a diameter of the liquid member flow path is ¼ inch or smaller.3. An inline pressure sensor according to claim 1 wherein the first liquid member flow path and the third liquid member flow path are disposed in a slanted manner.4. An inline pressure sensor according to claim 1 wherein the sensor element has a pressure sensing plane made from a polytetrafluoroethlene (PTFE).5. An inline pressure sensor according to claim 1, further comprising an O-ring for supporting an overall surface of the sensing element.6. An inline pressure sensor according to claim 1, further comprising:a tapered plane formed between a connecting section of the first and second liquid member flow paths; and a tapered plane formed between a connecting section of the second and third liquid member flow paths.