CO2-O2 Gas Sensor Module

An STM32F303-based sensor module designed to remotely monitor gas concentration levels of an environment chamber. -4-20mA signal outputs as well as an RS-232 interface are provided. -Data is also logged to a microSD card with battery-backed timestamps. -Interfaces to an offboard user interface module with pushbuttons and a character display for calibration and monitoring. -Controls and monitors the health of a diaphragm pump used to draw the remote air samples.