Field device for determining or monitoring a physical or chemical variable

A field device for determining or monitoring a physical or chemical variable, comprising:

• a sensor, which works according to a defined measuring principle;
• and
• a control/evaluation unit, which, as a function of a required safety standard for a particular safety-critical application, conditions and evaluates along at least two equivalent measuring paths measurement data delivered by said sensor, wherein:
• said control/evaluation unit is implemented on an application-specific integrated circuit—an ASIC—which, in at least a first section and in a second section, is embodied as a dynamically reconfigurable logic chip;
• in each of the two sections, in each case, a measuring path, which is composed of a plurality of function modules, can be configured;
• the individual sections are spaced apart from one another in such a manner, that a temperature and/or a voltage change in one of the sections has no influence on any other section;
• said control/evaluation unit partially dynamically reconfigures the function modules in the measuring paths as a function of the particular, defined;
• and
• the distance between two neighboring sections is greater than the channel length of transistors or size of structural elements, from which the application-specific integrated circuit, the ASIC, is constructed.