HygroLog HL-1D Compact Low Cost Data Logger

HygroLog HL-1D Compact Low Cost Data Logger

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The HL1D is a compact, low cost data logger capable of ±3.0 %RH and ±0.3°C accuracy. The internal memory can store up to 16,000 data points and includes the HW4-Lite software.


  • Measurement accuracy of ±3.0 %RH and ±0.3°C
  • Compact with high level of IP protection
  • Large storage capacity: 16,000 data point memory
  • MIN/MAX/AVG statistical function
  • Includes HW4-lite programming / analysis PC software
  • Very long battery life (3 years at logging interval of 5 min.)
  • FDA 21 CFR Part 11 / GAMP 4 compliant
Dimensions90 x 60 x 23 mm
Range of application-20…70 °C / 0…100 %RH
Accuracy at 23 ±5 °C±3.0 %RH / ±0.3 °C
Power supply / Power consumption1x CR2 battery
Battery life3 years at a logging interval of 5 minutes
Humidity sensorROTRONIC HYGROMER® IN-1
Temperature sensorNTC
Measurement interval30s…24h
Display typeLCD, 2 lines, resolution 1 decimal
Battery indicatorYes
FDA/GAMP compatibilityFDA 21 CFR Part 11 and GAMP compatible
Memory size16,000 data point memory (RH & T)
HW4 compatibleV3.4.1 and higher
Communication interfacesMini USB
IP protection ratingIP67

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