Abstract: A valve positioner for adjusting the position of a valve is provided. The valve positioner includes a housing having a service cartridge port and a valve connector. The valve positioner also includes a removable service cartridge having a cartridge housing received in the service cartridge port. The cartridge housing contains electronics and electro-pneumatic components associated with the valve positioner. The cartridge housing is configured such that removal does not expose the electronics and the electro-pneumatic components to an external environment.

Abstract: An integrated circuit board assembly includes two integrated circuit boards. The integrated circuit boards have an electronic circuitry configured on the interior face and a dielectric sealant on the other face. The integrated circuit boards are secured to a frame in such a manner that the interior faces of the integrated circuit boards face inward toward each other. The securing of the frame to the integrated circuit boards is such that it forms a sealed enclosure protecting the electronic circuitry configured therein from the process environment. The exterior faces, however, are exposed to the process environment and are helpful in dissipating heat to the exterior environment.

Abstract: A flex circuit connector assembly of the present invention includes folding one end of a flex circuit having contact pads to form a male contact portion. The male contact portion is then inserted into a female socket of an edge connector for electrically interconnecting the contact pads of the flex circuit to mating contacts disposed in the female socket of the edge connector. The edge connector includes pins for mounting it to a receptacle of a wired circuit.