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Data Logger vs DAQ, What's the differences?

Data Loggers vs. DAQ Applications What is the difference between a photo data logger and a data acquisition system (DAQ)? A data logger is a type of data acquisition system, but a data acquisition system is not necessarily a data logger. There are several key functional differences in the market's understanding of the two types of instruments. Although the differences between these two types of instruments have diminished as technology has advanced, there are still characteristics that separate them.



RT-Datalogger data collector cable



Sampling Rate or Analog-to-Digital Conversion Rate



Generally, the instrumentation market understands data loggers as devices with relatively slow sampling rates; typically, once per second or slower, while data acquisition systems (or DAQ systems) have sampling rates into the MHz or even GHz range. As the cost of high-speed A/Ds decreased, as more and more data loggers with sub-second sampling capabilities entered the market, the scope of this capability narrowed. You will find DAQ systems with many variations in sample rate and simultaneous or simultaneous sampling options, which is not common with today's data loggers.





Standalone or PC tethered


The data logger should be able to run without being connected to a network or PC for data storage. A large memory that allows data loggers to run for long periods of time is an essential feature of data loggers. Most data loggers can log months or even years of data before the memory fills up. Data loggers will also be able to overwrite the oldest data and continue indefinitely.



Premier Cable, CAS Data Logger Cable Application Specialist , if you want to know more information on data logger cables, pls leave your message.

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