OWL Series

Single-channel Range Settable Data Loggers

The OWL series of data loggers are single-channel, configurable data loggers featuring 10-year battery life, memory capacity of 32,767 readings, optical data transfer, and flashing visual alarm. It is important to note that on competitive products if the replaceable battery comes loose or dies you will not get data - lost time and effort far outweighs any price difference. The OWL Data Logger uses high ratio data compression to backup information up to 128x faster than the connection speed. This means that the data download rate is over 150k readings per second on the LiteLink interface for a value that did not change. Mearsurements are taken every 8 seconds and averaged over sample period for quanitative results. Software Packages are purchased separately as they can support more than one device.


  • Record: Temperature, Electric Current, Voltages or Process Current
  • Better than 0.5% FS Resolution - range settable for increased effective resolution
  • 32kB Memory - 29,200 Readings can hold 10 Years of data at 3 hour sample interval
  • Alarm thresholds and modes configurable - super-bright red blinking annunciator  
  • Conformal coating or encapsulation protects electronics from harsh environments
  • 3-Year Warranty and 10-Year Battery guarantee data is never lost


Common Specifications

Size 60 x 48 x 19 mm (2.4 x 1.9 x 0.7 in)
Weight 54 g / 1.9 oz (All models except OWL 100-Poly)
80 g / 2.8 oz (OWL 100-Poly water-resistant model)
Case Material Noryl® plastic (All models except OWL 100-Poly)
Polyurethane (OWL 100-Poly water-resistant model)
Operating Limits -40 to 70°C (-40 to 158°F) and 0 to 95% RH (non-condensing) except OWL 100-Poly
Clock Accuracy +/- 2 seconds per day
Battery 3.6 volt Lithium
Memory Size 32 KB (32,767 readings)
Sampling Method Continuous (First-in, First-out)*, Stop When Full (Fill-then-stop)
*Not available for sample rates faster than 8 seconds
Sampling Rate User selectable rates from 5 per second to once every 12 hours
Resolution 8-bit (1 part in 256)
Communication Optical data transfer; data can be transmitted through glass or transparent medium up to 25 mm (1in)
Alarm Type Flashes red LED once every 8 seconds
PC Requirements Windows PC with a least 256MB RAM, 250MB of hard drive space and one free serial or USB port
Software Requirements TrendReader® 2 (compatible with Windows® XP, Vista, Windows 7 and Windows 8 - 32 bit or 64 bit)