DEVICE FOR DETERMINATION AND/OR CONTROL OF MEDIUM PROCESS PARAMETER Russian patent published in 2009 - IPC G01F23/00 

FIELD: physics, measurement.

SUBSTANCE: invention is related to device for determination and/or control of at least one parameter of medium process, comprising sensor unit (1), electronic circuit (2) of feedback and additional electronic circuit (3). Sensor unit (1), electronic feedback circuit (2) and additional electronic circuit (3) create the first oscillating circuit (10) arranged with the possibility of oscillation, with at least one resonance frequency (ω₁) and/or with resonance frequency (ω_res) within the limits of at least one range of resonance frequencies. Electronic feedback circuit (2) and additional electronic circuit (3) create the second oscillating circuit (20) arranged with the possibility of oscillation at resonance frequency (ω_Kabelbruch), which differs from resonance frequency (ω_res, ω₁) of the first oscillating circuit (10).

EFFECT: detection of cable break between sensor unit and electronic feedback circuit with minimum expenditures and its characterization with the possibility of reliable difference from other conditions of detector.

5 cl, 5 dwg