Rotronic HygroLog TL-1D/HD-1D data loggers



  • High measurement accuracy of ±0.3 °C
  • Compact with high level of IP protection
  • Large storage capacity: 32,000 data point memory

Technical Data


Dimensions 90 x 60 x 23 mm
Weight 85 g
Range of application -20…70 °C / 0…100 %RH
Accuracy at 23 ±5 °C ±3.0 %RH / ±0.3 °C
Power supply / Power consumption 1x CR2 battery
Battery life 3 years at a logging interval of 5 minutes
Humidity sensor ROTRONIC HYGROMER® IN-1
Temperature sensor NTC
Measurement interval 30 s…24 h
Display type LCD, 2 lines, resolution 1 decimal
Battery indicator Yes
Memory size 32,000 data point memory (T)
HW4 compatible V3.4.1 and higher
Communication interfaces Mini USB
IP protection rating IP67
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible