PYROELECTRIC PRESSURE TRANSDUCER AND METHOD FOR ITS ASSEMBLY Russian patent published in 2000 - IPC

FIELD: aviation material, medicine and national economy. SUBSTANCE: the transducer is formed on the basis of dielectric film, in particular, polyimide film, 20 to 60 μm thick. The upper and lower transducer linings are successively formed through masks. The pyroelectric sensing element of the pressure transducer is positioned between the linings. The sensing element is protected against mechanical damage by a thin film of aluminium oxide. The transducer is also protected against external electromagnetic and common-mode interference. The thickness of the transducer on the basis of polyimide film, 40 μm thick, makes up 42 to 43 μm. The transducer stack is formed by the method of thermal evaporation in vacuum. The formed transducer stack is secured on the item surface by a thin layer of adhesive. The transducer by a thin layer of adhesive. The transducer operating temperature is +50 C. The lower limit of measured pressure is 1.0 Pa, and the upper one is 7000 Pa. EFFECT: expanded field of application and enhanced reliability due to enhanced transducer noise immunity. 3 cl, 1 dwg