| 发明名称 | Auto-zeroing absolute pressure sensor | ||
| 摘要 | One aspect provides a method including determining that an absolute pressure sensor is not submersed in a fluid; measuring an atmospheric pressure with the absolute pressure sensor to determine an offset pressure measurement; submersing the absolute pressure sensor in a fluid; and measuring pressure with the absolute pressure sensor; wherein a compensated pressure measurement of the fluid is determined. Other embodiments are disclosed. | ||
| 申请公布号 | US9116060(B2) | 申请公布日期 | 2015.08.25 |
| 申请号 | US201213478293 | 申请日期 | 2012.05.23 |
| 申请人 | Hach Company | 发明人 | Ashman David Alan;Higgins Timothy Alan;Marsh Lawrence B. |
| 分类号 | G01L7/18;G01L7/14 | 主分类号 | G01L7/18 |
| 代理机构 | Ference & Associates LLC | 代理人 | Ference & Associates LLC |
| 主权项 | 1. A method, comprising: determining that an absolute pressure sensor is not submersed in a fluid by comparing an electrical resistance between two or more electrodes to a predetermined threshold; measuring an atmospheric pressure with the absolute pressure sensor to determine an offset pressure measurement; submersing the absolute pressure sensor in a fluid; and measuring pressure with the absolute pressure sensor; wherein a compensated pressure measurement of the fluid is determined based on the pressure measured for the fluid and the offset pressure measurement. | ||
| 地址 | Loveland CO US | ||