What is Data Logger?
A data logger is a compact, battery-powered device equipped with an internal microprocessor, data storage, and one or more sensors, or sensor ports. Data loggers can be deployed in a variety of environments to record measurements at set intervals for up to years at a time, unattended.
Depending on the particular data logger, measurements can include air temperature, relative humidity, AC/DC current and voltage, differential pressure, time-of-use (lights, motors, etc.), light intensity, water temperature, water level, dissolved oxygen, soil moisture, rainfall, wind speed and direction, leaf wetness, pulse signals, room occupancy, plug load, and many more.
A data logger can be a single-unit, stand-alone device that fits in the palm of a hand, or it can be a multi-channel data collection instrument equipped with one or more external sensors.
How Do I Use a Data Logger?
First, using the accompanying graphing & analysis software, connect to the logger and determine how you want to configure the logger (which sensors to sample, how to start your logger, how to stop it, etc.) Then deploy the logger in the selected location, where it will record each time-stamped measurement and store it in memory.
After the desired monitoring period, reconnect with the logger and use the software again to readout the data and display measurements in graphs that show profiles over time. You can also view tabular data or export it to a spreadsheet for further manipulation.
Where are data loggers used?
Data loggers are used in a broad range of indoor, outdoor, underwater and temperature-controlled environments – essentially anywhere data is needed and the convenience of battery power is preferred.
What are the different types of data loggers?
The four main types of data loggers are: stand-alone USB data loggers, Bluetooth Low Energy (BLE)-enabled data loggers, web-based systems, and wireless sensors (data nodes).
Short-term trend logging with manual offload.
Bluetooth (BLE) Loggers
Wireless data access via mobile devices.
Long-range wireless internet access.
Short-range centralized data collection