Multivariable process fluid transmitter for high pressure applications

  • US 9,234,776 B2
  • Filed: 09/26/2013
  • Issued: 01/12/2016
  • Est. Priority Date: 09/26/2013
  • Status: Active Grant
First Claim
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1. A multivariable process fluid transmitter module comprising:

  • a base having a pair of recesses,a pair of pedestals, each pedestal being disposed in a respective recess and being coupled to a respective isolation diaphragm and configured to couple to a process fluid at a high line pressure;

    at least one line pressure assembly mounted proximate one of the pedestals, the at least one line pressure sensor assembly coupling a respective isolation diaphragm to a line pressure sensor;

    a differential pressure sensor having a sensing diaphragm fluidically coupled to the isolation diaphragms by a fill fluid;

    at least one additional sensor disposed in the process fluid transmitter module to sense a variable of the process fluid;

    circuitry coupled to the line pressure sensor, the differential pressure sensor, and the at least one additional sensor to measure an electrical characteristic of each of the line pressure sensor, the differential pressure sensor, and the at least one additional sensor; and

    wherein the circuitry is configured to provide an output related to the at least one line pressure sensor, the differential pressure sensor and the at least one additional sensor.

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