AMBIENT TEMPERATURE COMPENSATION DOUBLE BRIDGE ANEMOMETER

摘要

Flow measuring device with on a chip (18), four flat sensing resistors (R1, R3, R3', R4') connected into two bridge configurations (1, 2), parallelly disposed but shifted over 90° with respect to each other, each respective bridge output (9, 10, 11, 12) connected to the respective inputs of a differential amplifier (A1, A2) with the outputs (13, 14) of said amplifiers (A1, A2) connected to the inputs of a third differential amplifier (A3).