ACR Electronics OWL 100, Reference Manual, Page: 23 / 55

OWL Data Logger
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1.3
OWL Temperature Data Logger (Internal Sensor)
Features
The OWL Temperature Data Logger with the Internal Sensor offers temperature recording in a
small, water-resistant enclosure. In addition to its rugged construction, the logger can be
setup to record a wide range of temperatures, all configurable by a few, easy keystrokes.
1.3.1 Description
The Internal Sensor Temperature Logger uses an on-board thermistor to record changes in
temperature. The model available is the OWL-100 which operates from -40 to 70°C (-40 to
158°F).
1.3.2 Setup and Use
TrendReader allows you to select the size of a range and a midpoint for the range. Choosing
the size of range allows you to control the resolution: a smaller range results in a higher
resolution for the readings. Choosing the midpoint allows you to control where the highest
resolution will occur: readings closest to the midpoint of a temperature range are higher in
resolution than those at each end of the range. See Appendix A Temperature Ranges for a
list of the available ranges.
The steps required to configure the OWL Temperature Logger are as follows:
1. Run TrendReader Software and choose the Internal Sensor equation.
2. Select a range that best fits the expected data.
3. Refer to the OWL Software driver for other options.