Types of data loggers range from the simple, stand-alone units built into a USB stick with a single sensor small enough to fit in the palm of your hand, to multi-channel universal input instruments that measure multiple external sensors that can be connected to a PC or networked to monitor and record data.
The most common data logger types:
- USB: Simple, small and reusable, stand-alone USB data loggers are your lowest cost data logger option. These loggers are built into a USB stick form factor and can use either internal sensors to monitor the local environment or external sensors to monitor at some distance from the data logger. The recorded data is transferred to a computer by plugging the logger into a USB port. There are quite a variety of options for measurement type including temperature, humidity, voltage or current, models with a built-in display and different options for data retrieval including PDF downloads that don’t require extra software.
- Bluetooth: Bluetooth data loggers provide simple wireless connectivity. These loggers can measure and transmit any number of measurement parameters within a 30-50-meter range to a computer or mobile device. Common types include temperature, humidity (RH%), 4-20mA, voltage, current and more.
- WiFi: WiFi data loggers provide a convenient way to remotely access data using the standard 802.11 wireless networking interface. Again, within this category there are a range of types from simple devices with one built-in sensor to universal input models that record data from multiple external sensors. Often, these loggers are Web enabled; they either offer a built-in web interface or can push data via the internet to a cloud-based server for monitoring, analysis and alarming.
Other types of data loggers include RFID, Modbus, high-speed, portable and paperless chart recorders. No matter what your project, there is a data logger solution that is suitable to your specific project. Click here for information on more data logger applications.