Sensor arrangements and methods of production thereof

Abstract

A sensor arrangement includes at least one sensor element with electrical connections and arranged in a solid plastic-material body, and at least a first electrically insulating layer which embeds the sensor element arranged between the sensor element and the plastic-material body, wherein the first electrically insulating layer includes a liquid polymer, and the plastic-material body is closed in an end region at least to such extent that the liquid polymer is sealed inside the plastic-material body in an airtight manner.

1 . A sensor arrangement comprising:
 at least one sensor element with electrical connections and arranged in a solid plastic-material body, and   at least a first electrically insulating layer which embeds the sensor element arranged between the sensor element and the plastic-material body,   wherein the first electrically insulating layer comprises a liquid polymer, and the plastic-material body is closed in an end region at least to such extent that the liquid polymer is sealed inside the plastic-material body in an airtight manner.   
     
     
         2 . The sensor arrangement according to  claim 1 , wherein a further insulating layer is arranged between the first insulating layer and the plastic-material body. 
     
     
         3 . The sensor arrangement according to  claim 1 , wherein the further insulating layer comprises a polymer. 
     
     
         4 . The sensor arrangement according to  claim 1 , wherein the electrical connections are rigid supply leads. 
     
     
         5 . The sensor arrangement according to  claim 1 , wherein the at least one sensor element functions as a temperature sensor. 
     
     
         6 . The sensor arrangement according to  claim 1 , wherein the at least one sensor element functions as an optical sensor. 
     
     
         7 . The sensor arrangement according to  claim 6 , further comprising at least one optoelectronic component. 
     
     
         8 . The sensor arrangement according to  claim 1 , having an AC voltage endurance of at least 3000 V. 
     
     
         9 . The sensor arrangement according to  claim 1 , wherein the plastic-material body has a material thickness of at least 1 mm. 
     
     
         10 . A method of producing a sensor arrangement comprising:
 providing a plastic-material body having hollow space in which at least one sensor element is positioned, and   arranging at least a first electrically insulating layer in the hollow space between the sensor element and the plastic-material body such that the first electrically insulating layer embeds the sensor element,   wherein the first electrically insulating layer comprises a liquid polymer, and the plastic-material body is closed in an end region at least to such extent that the liquid polymer is sealed inside the plastic-material body in an airtight manner.