Customized humidity controlled chambers. The setup include three main parts. The first module is the digital humidity sensor that is contained within the humidity control box. The second module is the controlled air source. There are two air streams that contain 0% RH and 100% RH respectively. The second module is the interface and control module. Through the computer interface, users can input desired RH for the test chambers. It takes between 20 seconds to 1 minute for the system to react and reach the desired RH. The equipped digital humidity sensor (HTU21D(F), Adafruit) has a typical accuracy of ±2% with an operating range that is optimized from 5% to 95% RH, and is connected via I2C to the control interface.
