TRANSMITTER OF DIFFERENTIAL PRESSURE WITH COMPLEMENTARY DOUBLED SENSORS OF ABSOLUTE PRESSURE Russian patent published in 2014 - IPC G01L13/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment and may be used to measure pressure of working fluids. A transmitter of a process parameter for measurement of pressure of a working fluid includes a working joint having the first port made as capable of connection to the first working pressure, and the second port made as capable of connection to the second working pressure. A sensor of differential pressure is connected to the first and second ports and provides for an output signal connected with differential pressure between the first pressure and the second pressure. The first and second sensors are connected to the appropriate first and second ports and provide output signals connected to the first and second pressures. The transmitter circuit is made with the possibility to provide an output signal of the transmitter on the basis of the output signal from a differential pressure sensor and/or the first and/or second pressure sensor. At the same time the first and second pressure sensors have an upper border of the range of approximately 5,000 pounds per square inch.

EFFECT: increased accuracy of the flow measurements.

19 cl, 6 dwg