| 发明名称 |
MASS FLOWMETER |
| 摘要 |
A small and light-weight flowmeter realizes the compensation of a zero point drift. A mass flowmeter includes: a centrifugal force/centripetal force detection strain gauge adhered to a part acted upon by a centrifugal force or a centripetal force of fluid in a pipe line in which the fluid flows and a flow rate zero point drift compensation strain gauge adhered to a position different from that of the centrifugal force/centripetal, force detection strain gauge. A pulse wave propagation time between the two points is used to compensate a zero point drift of a flow rate. |
| 申请公布号 |
US2015253170(A1) |
申请公布日期 |
2015.09.10 |
| 申请号 |
US201314438197 |
申请日期 |
2013.10.09 |
| 申请人 |
National Institute of Advanced Industrial Science and Technology |
发明人 |
Kosaka Ryo;Fukuda Kyouhei;Yamane Takashi |
| 分类号 |
G01F1/78;G01F1/50;G01L13/00 |
主分类号 |
G01F1/78 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A pressure sensor, comprising:
a first pressure detection device configured to detect the pressure of fluid in a pipe line in which the fluid flows; and a second pressure detection device configured to compensate a zero point drift at a position different from a position of the first pressure detection device, wherein a pulse wave propagation time between the first and second pressure detection devices and a pressure change amount of the pressure detection means are used to compensate the zero point drift of a pressure of the first pressure detection device. |
| 地址 |
Tokyo JP |
