Rotronic HygroLog HL20 Data Logger

Rotronic, HygroLog HL20, Data LoggerThe Rotronic HygroLog HL20 is the latest development of data loggers for relative humidity, temperature, dew point and frost point. This data logger provides the accuracy and reliability to measure and record essential data whether it be in pharmaceutical clean rooms, storage facilities, manufacturing areas, buildings, museums or any other critical area. The HL20 is fully compliant with FDA 21 CFR part 11 and GAMP 4 requirements for electronic records and electronic signatures (ERES).

Features

  • Manufactured by Rotronic

  • HL20 logs humidity and temperature data

  • Both models available with or without a display

  • Highest accuracy at 0.8% RH and 0.2°C

  • Outstanding long term stability

  • 20000 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 to USB interface

  • Long battery life

The foundation of the Rotronic HygroLog HL20 data logger is the AirChip3000 digital technology. The AirChip3000 temperature compensates humidity readings with over 30,000 reference points. It also enables dew/frost point calculation, sensor auto-diagnostics, automatic correction, and active alarming. The AirChip3000 also conforms to FDA21 CFR Part 11 and GAMP4 (audit trail).

The Rotronic HygroLog HL20 series data logger is available with or without a display. The display is backlit and has a battery charge indicator. It shows measured and calculated data with resolution to 2 decimal places and has a function key to start and stop logging.

The HygroLog HL20 logs up to 20,000 relative humidity and temperature value pairs. Each record is time and date stamped, the log interval is adjustable and there are two data recording modes: start-stop or loop. The HL20 has visible alarms that can be programmed to detect the following: an out-of-limits value, communication loss with the probe or a sensor failure and sensor drift.

The Rotronic HygroLog HL20 series data logger is also available as a set and includes the HL20, HW4 software and an AC3006 cable.

Rotronic HygroLog HL20 Datalogger Specifications
Device type
Humidity-temperature datalogger with internal sensor
Measuring range
0 to 100% RH/-10 to 60°C
Accuracy at 23°C
±0.8% RH/±0.2°C
Repeatability
0.3% RH/±0.5°C
Long term stability
< %RH /year /< 0.1°C/year
Response time
Humidity: typical 3 min
Temperature: typical 10 min (both depend on air flow)
Psychometric calculations
Dew or frost point (user configurable setting)
Start-up time
1.9s (typical)
Data refresh rate
1.7s (typical)
Recording capacity
HL20: 20000 value pairs
HL21: 20000 values
Real time clock
Yes, adjustable via PC
Logging modes
Start-stop (recording stops when memory is full)
Loop: oldest data is dumped to make room for latest data
Interface type
UART (Universal Asynchronous Receiver Transmitter)
Optional display
LC, 1 or 2 decimal resolution, backlight, alarm and low battery indication
LED indicator
5 sec. green flash when recording data
5 sec. red flash for out-of-limit value or logger problem

Rotronic Hygrolog HL20 Data Logger Data Sheet
Rotronic Hygrolog HL20 Data Logger Manual


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