UTL-3 Scientific Datalogger is the brand new and powerful Miniature Temperature Datalogger from GEOTEST (Zollikofen/Bern, Switzerland) and the Institute for Snow and Avalanche Research SLF (Davos, Switzerland). UTL-3 Scientific Datalogger is your best choice for measuring permafrost, ice and ground temperatures in rough climatic environments.

It consists of a highly resistant delrin case with aluminium screw cap and is totally waterproof.

Comparison of the older UTL-1/2 models with the new UTL-3 Scientific Datalogger:

UTL-1 and UTL-2 Datalogger

New UTL-3 Scientific Datalogger

Temperature range

-29 °C to +39 °C

-30° to +40 °C

Accuracy

0.1 °C

0.1 °C at +/- 20 °C, 0.2 °C at +/- 40 °C

Data resolution

0.27 °C

< 0.1° C

Thermistor

TMC-1T

YSI 44005 (typical thermometric drift for 0 °C < 0.01 °C in 100 months)

Number of data points

7’988

65’000

Battery life

1-2 years

3-5 years

Battery change

Do-it yourself

Do-it yourself

Interface RS-232 (serial) USB 2.0

Diameter of case

38 mm

32 mm

Case material

Aluminium / Delrin, waterproof and highly resistant

Aluminium / Delrin, waterproof and highly resistant

Software

BoxCar (copyright Onset)

UTL Manager (for free, copyright GEOTEST / SLF)