Pressure gauge
US8069729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2007 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure measuring device for measuring and/or monitoring the pressure of a measured medium. The pressure measuring device includes a sensor housing and a measurement transmitter, wherein assigned to the sensor housing is a pressure measuring cell with a pressure sensitive measuring element. Assigned to the pressure measuring cell is a temperature sensor, and assigned to the measurement transmitter is a control/evaluation unit. In order to increase the measurement accuracy of the pressure measuring device, it is provided, that the control/evaluation unit, in the case of an abrupt change of the temperature registered by the temperature sensor, ascertains, or provides, a step response, wherein the step response has a sensor-type-specific, settling time, and the control/evaluation unit, on the basis of the ascertained, or provided, step response, references the corresponding time-dependent integral temperature of the pressure measuring cell, in order to eliminate, or to compensate, the temperature influence on the pressure measurement signal provided by the measuring element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.