| 摘要 |
<p>A process variable transmitter (10) for measuring a process variable of a process fluid in a vessel includes first and second pressure couplings (166,168) arranged to receive a first pressure P<SUB>1</SUB> and a second pressure P<SUB>2</SUB> of process fluid in the vessel. These pressures are related to the density of the process fluid. A sensor (204) provides a sensor output related to the process fluid in the vessel. Measurement circuitry (202) is configured to calculate a calculated process variable of the process fluid in the vessel based upon the first and second pressures P<SUB>1</SUB>, P<SUB>2</SUB> and the sensed process variable.</p> |
