The new HygroLog HL-20/21 series
The new HygroLog HL20/21 series is the latest development of data loggers for relative humidity, temperature, dew point and frost point.
The new HygroLog HL20/21 series is the latest development of data loggers for relative humidity, temperature, dew point and frost point. These loggers give you the accuracy and reliability to measure and record your essential data whether it be in pharmaceutical clean rooms, storage facilities, manufacturing floors, buildings, museums or any other critical area.
Highlights
- 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 Point and Frost Point
- FDA 21 CFR Part 11 / GAMP 4 compliant
- USB interface
- Long Battery Life
Technical specifications:
- Measurement accuracy at 23 °C: ±0.8 %rh / ±0.2 °C
- Operating limits: 0...100 %rh / -10…60 °C, with LCD: 0….50°C
- Recording capacity : HL-20; 20000 value pairs (rh+°C) / HL-21; 20000 values (°C)
You can find further detailed information about the new HygroLog HL-20/21 and all about humidity and temperature measurement at ROTRONIC at www.rotronic-humidity.com, by E-Mail humidity@rotronic.ch or by telephone at +41 44 838 11 44.
Specification Equivalence—A Practical Approach
December 30th 2024In this first of a four-part series, the authors provide an introduction to a practical approach for establishing specification equivalence. The regulatory basis and compliance examples from FDA observations and warning letters are included to support the need for an effective process.
