What is data logging? Data logging is the process of acquiring data over a specific period of time. Both manual and automatic methods can be used for this purpose. Manual data logging involves a person to take readings of data after set intervals in the environment to be monitored. However, this method is considered to be unreliable, inefficient and expensive. Automatic data logging involves using a device with sensors that continuously capture data and send it to a computer for analysis. What are data loggers? Data loggers are used to record data and measurements from an environment under study. They can record this data during predetermined time intervals and can be left unattended for long periods of time. They are typically used for recording physical data like temperature, current and voltage. The data captured can be transferred to a computer to be analyzed later on.Their price varies from being as cheap as 25$ to thousands of dollars depending on the functions and complexity of the device. Construction Data loggers are small, battery powered devices. A microprocessor, internal memory for storing data and sensors to take input, are embedded into this device. It also comes with an interface to adjust settings and view measurements. Some data loggers are used with a personal computer for activation and settings while others can be used as independent devices. Use One of the most important benefit of this device is that it is able to capture data over long periods of time. Once activated, they are deployed into the environment to be monitored and they keep recording data for the set time interval. They provide an accurate reading of the data to be monitored. They can be set into the environments that are non feasible for human activity to get a good picture of the temperature, atmosphere and other conditions. Another advantage is that they are able to work as a stand-alone device, unlike other data acquisition devices that need to be connected to a computer. Types Data loggers are available in two basic types: general and specific purpose. General purpose types can be used in a variety of environments and to do a wide range of measurements. These are usually programmable too. The specific purpose types are non-programmable and are able to perform only some specific measurements. They can be deployed in some environments where they are designed to function. Where are they used?
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February 2019
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