HygroLog HL-20

The compact data logger for humidity and temperature measurement offers high precision and reliability at a reasonable price. The HL20 series is easy to use and
deployable in a wide range of applications. Thanks to its integrated batteries, the HL20 works completely independently and offers its users maximum flexibility.

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The compact data logger for humidity and temperature measurement offers high precision and reliability at a reasonable price. The HL20 series is easy to use and
deployable in a wide range of applications. Thanks to its integrated batteries, the HL20 works completely independently and offers its users maximum flexibility.

Applications
Warehouses, factory halls, museums, office buildings, clean rooms, shipping, libraries, test facilities

Features
• Highest accuracy at 0.8 %RH and 0.2 ˚C
• Outstanding long term stability
• 20,000 data point memory with date & time stamps
• Programmable alarm limits
• Programmable recording intervals
• Psychrometric calculations of dew and frost point values available
• FDA 21 CFR Part 11 / GAMP 4 compliant
• UART interface
• Long battery life

 

Dimensions

130 x 72 x 32 mm

Operating range electronics

-10…60 °C / 0…100 %rh

Accuracy at 23 ±5 °C

±0.8 %rh @ 10...60 %rh / ±0.3 K 
±1.3 %rh @ 60...100 %rh / ±0.3 K

Measuring range with integrated probe

-10…60 °C / 0…100 %rh

Power supply / Power consumption

3x AA (1.5 V) alkali battery

Long-term stability sensor

<1 %rh / year

Response time t 63

3 min. (typically)

Psychrometric calculations

Dew or frost point

Measurement interval

5 sec. to 1 hour in 5 sec. increments

Memory size

20000 data values (%rh/°C, Date, Time)

Status indicator LED

5 sec.: Green flash when recording data, red flash for out-of-limit value or logger problem

Communication interfaces

Mini USB (UART)

Enclosure material

ABS

IP protection rating

IP40

FDA/GAMP compatibility

FDA 21 CFR Part 11 and GAMP compatible