Common measurement devices used in data recorders include thermometers, barometers, and scales, to name a few. Instruments can also be used to measure the speed of flow, intensity of light, humidity, or pressure. These devices measure and monitor conditions; their data is then converted into an electronic signal that can be understood by a computer. The computer converts this data into a digital form that can later be analyzed by specially designed software.
Data recorders can be found in many different environments, serving various functions. These devices are particularly useful for collecting data over extended periods of time. Most data recorders only require an initial set up and can then be left unattended to record information. Since they can record data for prolonged time periods, they also have the advantage of providing a complete image of the environmental conditions.
Museums and food storage facilities, for instance, utilize specialized data recorders to track facility temperature and then maintain a constant temperature level. They are also used to control test conditions, activate safety alarms, and regulate temperature in sensitive environments. Data recorders enable manufacturers to monitor their equipment and to make any necessary adjustments.