A data acquisition system collects data from sensors, conditions and digitizes the analog signals, and stores or displays the digital data for analysis. It consists of transducers that convert physical parameters to electrical signals, signal conditioners that prepare the analog signals for processing, an analog multiplexer that selects different sensor signals, an analog-to-digital converter that converts the signals to digital values, and recorders, displays or a computer that receive the digital output for storage, visualization or further processing. The system provides accurate, fast and reliable conversion and collection of sensor data with minimal downtime for analysis and monitoring of processes.