COMPENSATED FLUID LEVEL TRANSMITTER

摘要

A fluid level transmitter combination for placement on a tank having ≦2 tank apertures. A first and second flange provides a first, second and third flange aperture over the tank aperture(s). A temperature sensor over the first flange aperture senses a temperature. A first pressure sensor over the second flange aperture senses a first pressure. A second pressure sensor senses a second pressure. A processor is coupled to the output of the second pressure sensor that implements a compensated fluid level determination algorithm using the temperature, first pressure, and second pressure to generate a compensated fluid level measurement for the process fluid. A transmitter is coupled to an output of the processor.

主权项

1. A fluid level transmitter combination, comprising:
a first flange and a second flange configured for placement on a tank including no more than two (2) tank apertures that has a process fluid therein, said first and said second flange including at least a first, second and third flange aperture formed over said tank apertures; a temperature sensor over said first flange aperture providing a temperature output signal for sensing a temperature in said tank; a first pressure sensor over said second flange aperture having a first pressure output signal for sensing a first pressure in said tank, and a second pressure sensor over said third flange aperture having a second pressure output sensing a second pressure in said tank; a processor coupled to an output of said second pressure output, said processor implementing a temperature and pressure compensated fluid level determination algorithm (level determination algorithm) stored in associated memory; a first connection coupling said temperature output signal to said processor, and a second connection coupling first pressure output signal to said processor, wherein said level determination algorithm uses said temperature, said first pressure, and said second pressure to generate a temperature and pressure compensated fluid level measurement for said process fluid, and a transmitter having an input coupled to an output of said processor.