UTL-3 Temperature Datalogger

Professional temperature logging in rough environments

UTL-3 Scientific Datalogger is a powerful miniature datalogger for professional temperature measurement and logging and is your best choice for measuring permafrost, ice, air, water and ground temperatures in rough environments.

Developed with the expert knowledge of GEOTEST and the Institute for Snow and Avalanche Research SLF in Switzerland, it is one of the most reliable and robust temperature dataloggers on the market. UTL-3 dataloggers and their predecessor models UTL-1 and UTL-2 have been deployed thousands of times for measurements in cold environments such as ice, glaciers, rock glaciers and permafrost soils and for air and water temperature measurements all over the world.

Technical data

Temperature range -30° to +40 °C
Accuracy 0,1 °C at +/- 20 °C; 0,2 °C at +/- 40 °C
Data resolution < 0,1 °C
Thermistor YSI 44005 (typical thermometric drift for 0 °C < 0,01 °C in 100 months)
Number of data points 65’000
Battery life 3-5 Jahre
Battery change Do it yourself
Interface USB 2.0
Diameter of case 32 mm
Case material Aluminium / Delrin (waterproof and highly resistant)
Software UTL Manager (for free, copyright GEOTEST)

Products and prices

UTL-3 Scientific Datalogger Standard Version, incl. battery and software CHF 315.00
UTL-3 Scientific Datalogger With 2 m external thermistor, incl. battery and software CHF 399.00
Connection flex for UTL-3 USB 2.0 CHF 29.00
Backup battery¹ for UTL-3 Lithium 3.6 V CHF 24.90
Keyspan USB Adapter for UTL-1/2 USB to RS-232 CHF 89.00
Connection flex for UTL-1/2 RS-232 CHF 49.00

Prices excl. VAT. For universities/research institutes there is a reduction of CHF 20.00 on each logger. Please ask us for quantity discount or an offer.

Questions and order: UTL_Dataloggergeotestch

¹ Due to new regulations in international transport services we are not able anymore to deliver lithium batteries by airplane. Transportation on the road or by ship is still possible but with corresponding delivery times. Please contact us for more information about delivery time. UTL-3 dataloggers with installed lithium battery inside are not affected by this regulation.

Contact us:

Andreas Sutter

MSc Geograph



+41 31 910 01 93

Other GEOTEST products


The digital field notebook for outdoor professionals. Designed to ensure consistent data collection.


Digital property management: keep an eye on the condition of your property.


Rockfall modelling based on 2D profiles – as a basis for sound action planning.


Maintain an overview of incoming, outgoing and stockpiled explosives.

Back to top