发明名称 |
ABSOLUTE PRESSURE SENSOR |
摘要 |
<p>This specification discloses an absolute pressure sensor and measuring technique using an electrochemical apparatus as a feedback element in an oscillator circuit. The sensor needs no reference pressure or reference vacuum. Contributing to sustained oscillation is a phase shift caused by the electrochemical apparatus. The period of oscillation of the oscillator circuit is inversely proportional to the diffusion coefficient of oxygen in its carrier gas, which, in turn, is inversely proportional to total absolute pressure. The result is that the period of oscillation of the oscillator circuit is proportional to total absolute pressure.</p> |
申请公布号 |
CA1174484(A) |
申请公布日期 |
1984.09.18 |
申请号 |
CA19820399103 |
申请日期 |
1982.03.23 |
申请人 |
FORD MOTOR COMPANY OF CANADA, LIMITED |
发明人 |
HETRICK, ROBERT E.;FATE, WILLIAM A. |
分类号 |
G01L7/00;F02D1/06;G01L9/18;G01L11/00;G01N27/407;G01N27/409;G01N27/416;G01N27/417;(IPC1-7):G01L9/00 |
主分类号 |
G01L7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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