PRESSURE DIFFERENCE METER EQUIPPED WITH SENSOR Russian patent published in 2017 - IPC G01L13/00 

FIELD: measuring equipment.

SUBSTANCE: process variable meter for measuring technical fluid pressure includes: a primary input that is configured to supply primary process pressure and a secondary input configured to supply secondary process pressure; a differential pressure sensor that connects to the primary and the secondary input and transmits an output signal associated with the difference between the primary and the secondary pressure; a primary pressure sensor that connects to the primary input and transmits an output signal associated with the primary pressure. The sensor of the primary pressure is in direct contact with the technical fluid; a flange including, at least, a plurality of primary and secondary inputs and a direct connection channel that combines the primary pressure sensor with the primary input, and a meter circuit configured to transmit the output signal based on the output signal of the differential pressure sensor by the meter and further providing extended functionality depending on the signal coming from the primary pressure sensor. The second version of the measuring instrument for the process variables as well as a method for measuring the process liquid pressure by means of such meters are also implemented.

EFFECT: inventions allow the fluid pressure meters to function in the event that the insulation diaphragm is in an inoperative state.

18 cl, 6 dwg