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Data loggers are used where a history is required. Data loggers
can operate in different modes to suit the application, usually
allowing control on how many data points you collect in a period
and how long the period should be.
Data loggers can be configured to just record everything allowing
you to see what led up to and what happened after a particular
event of interest. Data loggers also have configurable setpoints
which allow a different style of data logging to be used whereby
only the data points outside of the setpoints is logged.
There are numerous ways of displaying the acquired data and the
logging software has various set displays, but for more complex
displays the data logging software offers the facility for the
data to be exported so that spreadsheets and data bases can be
used to manipulate the data and produce more complex output. The
database output my be used to analyse variance across the datapoints
of several sets of data.
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