A data logger is an electronic recording instrument that monitors and reports various changes in environmental conditions over time. Data loggers can measure temperature, relative humidity, light intensity, voltage, pressure, shock, and the list goes on. Because they are stand-alone devices, data loggers are conveniently used to verify and control the quality of handling of any given product in storage, transit, or distribution. Because data loggers do not need to be linked to an external source of power, they can travel along with your products while continuously recording the specific type of data you need. Today data loggers exist in all sorts of shapes and sizes and are used everywhere from your local restaurants refrigerator to the International Space Station.
To meet the growing demand for optimal cold chain management and the need for small data recording instruments, engineers have developed miniaturized, battery-powered data loggers equipped with a microprocessor, data storage system, and sensor. Some data loggers provide the recorded data on a paper strip chart, while others can interface with your personal computer. You can simply download information by either connecting the logger to a computer port and using specialized software to analyze, organize, and print the data or, in the case of wireless data loggers, remotely access the information. With wireless data loggers, you can monitor several locations at the same time, creating the equivalent of a data logging network.