HL-20 Series Economical Data Logger

Brand: Rotronic Instrument Corp.

The compact data logger for humidity and temperature measurement offers high precision and reliability at a reasonable price.

The HL-20 series is easy to use and deployable in a wide range of applications.

Thanks to its integrated batteries, the HL-20 works completely independently and offers its users maximum flexibility.
Features
  • Highest accuracy at 0.8 %RH and 0.3 ˚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

Specifications

Long-term stability

  • < 1 % Relative Humidity / year

Accuracy at 23 ±5 °C

  • ± 0.8 % Relative Humidity @ 10...60 % Relative Humidity / ± 0.3 K
  • ± 1.3 % Relative Humidity @ 60...100 % Relative Humidity / ± 0.3 K

Response time t 63

  • 3 min. (typically)

Power consumption

  • 3× AA (1.5 V) alkali battery

Dimensions

  • 130 × 72 × 32 mm

Operating range

  • -10…50° C / 0…100 % Relative Humidity

Psychrometric calculations

  • Dew or frost point

Storage Conditions

  • -40…85° C

IP protection rating

  • IP40

Connector

  • Standard Rotronic 7-Pin connector

FDA/GAMP compatibility

  • FDA 21 CFR Part 11 and GAMP compatible

Status indicator LED

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

Measuring range with integrated probe

  • -10…60° C / 0…100 % Relative Humidity

Measurement interval

  • 5 sec. to 1 hour in 5 sec. increments

Memory size

  • 20000 data values ( % Relative Humidity/°C, Date, Time)

Communication Interfaces

  • Mini USB (UART)

Enclosure material

  • ABS

T63

  • 90 s

Documentation

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