Lau Soon Kiat, Subbiah Jeyamkondan
Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
HardwareX. 2020 Sep 11;8:e00141. doi: 10.1016/j.ohx.2020.e00141. eCollection 2020 Oct.
Relative humidity can affect physical, biological, and chemical changes in biological samples through modification of water activity and is also known to be important in the fabrication of sensitive electronic devices. The HumidOSH is a free, open source, and self-contained system for creating a controlled relative humidity environment within the range of 3 to 97% with a 0.2% tolerance. Each HumidOSH unit also comes with a fan with adjustable fan rotational speed to improve moisture uniformity inside the chamber. The system includes many additional features such as glove ports for manipulating samples, a sample door for transferring objects in and out of the system, ceiling lights for illuminating the work area inside the chamber, and two-point calibration for the relative humidity sensor. While relative humidity and fan rotational speed readings are displayed in real-time on the built-in user-friendly interface, the readings can also be recorded through a USB connection to a laptop or computer and the optional computer program. The design files, source code, and build instructions of the HumidOSH can be accessed at https://dx.doi.org/10.17605/OSF.IO/WCKHM.
相对湿度可通过改变水分活度影响生物样品中的物理、生物和化学变化，并且在敏感电子设备的制造中也很重要。HumidOSH是一个免费、开源且独立的系统，用于创建相对湿度在3%至97%范围内、公差为0.2%的可控环境。每个HumidOSH单元还配备一个风扇，风扇转速可调节，以提高腔室内的湿度均匀性。该系统还具有许多其他功能，例如用于操作样品的手套端口、用于在系统内外转移物体的样品门、用于照亮腔室内工作区域的顶灯以及相对湿度传感器的两点校准。虽然相对湿度和风扇转速读数会实时显示在内置的用户友好界面上，但这些读数也可以通过USB连接到笔记本电脑或计算机以及可选的计算机程序进行记录。HumidOSH的设计文件、源代码和构建说明可在https://dx.doi.org/10.17605/OSF.IO/WCKHM上获取。
