What is the difference between a Temperature iButton (i.e. DS1920) and a Thermochron?
The DS1920 is not a data logger, rather a temp sensor. The difference is a sensor requires a host PC or micro controller to interrogate the device for the temperature reading and stores the result in the host memory (Hard disk, etc.) and must therefore be connected to the device during the duration of the data collection. A data logger, once missioned (via PC software), does not require any other connections in order to take and store temperature readings. The data is stored in device’s memory and extracted once the mission has completed.
