PROCESS ANALYTIC SENSOR WITH LOW POWER MEMORY WRITE FUNCTION

摘要

A process analytic sensor (14) is provided. The process analytic sensor (14) includes a process analytic sensing element (24) that is coupleable to a process. The process analytic sensing element (24) has an electrical characteristic that varies with an analytical aspect of the process. A microcontroller (22) is disposed within the process analytic sensor (14) and is coupled to the process analytic sensing element (24) to sense the electrical characteristic and provide an analytical signal based on the sensed characteristic. The microcontroller (22) is operable on as little as 0.5 milliamps and includes electrically erasable programmable read only memory (EEPROM) (54) that can be written while the microcontroller (22) operates on as little as 0.5 milliamps.