FIELD DEVICE ASSEMBLED WITH PRINTED CIRCUIT BOARD AS SCREEN FOR PROTECTION AGAINST EFFECT OF ENVIRONMENT AND AGAINST ELECTROMAGNETIC FIELD/RADIO INTERFERENCE Russian patent published in 2009 - IPC H05K1/02 H05K9/00 

FIELD: physics, control.

SUBSTANCE: present invention is related to electron field devices such as transmitters of technological processes parameters used for monitoring (routine inspection) of these processes. In particular, the present invention is related to electron field devices used in environment of technological plants, which may produce high level of electromagnet interference. Field industrial device (200) for operation under severe conditions comprises body (208) with electroconductive walls that surround cavity (206) with open end. Cavity may contain electronic module (292) based on printed circuit boards. Device comprises ready-fitted printed circuit board (270), which represents multilayer printed circuit board with through electric contacts and hidden layer (350) of grounding, which is electrically connected to body (202) for screening of electronic module (292) against electromagnet interference and provision of electronic module protection against effect of environment.

EFFECT: creation of body designs for transmitters of technological processes parameters, which possess improved resistance to effect of moisture and substances that pollute the environment, and also provide efficient filtration of electromagnetic field and radio interference.

30 cl, 9 dwg