The Rotronic HygroPalm21 measurement range is from -10 to 60 °C (14 to 140 °F) and 0 to 100 %RH.
The HP21 is an indicator that displays humidity, temperature and the dew or frost point. It is ideal for spot checking HVAC installations, manufacturing and storage areas, and generally for all ambient air measurement within the temperature range of -10 to 60°C (14 to 140 °F). The indicator has a broad set of settings and capacities that can be configured and enabled by the user with the Rotronic HW4 software. The Hp21 can still be utilized pretty much as a simple humidity and temperature indicator.
Integral or interchangable probe • The HygroPalm21 has an integral probe and the HygroPalm22 is used with an interchangeable probe
Easy to read display • Clear, backlit graphic display for easy reading
AirChip3000 • Compensates humidity and temperatureover 30,000 reference points • 2,000 data point memory • Dew/frost point calculation • Sensor auto-diagnostics and automatic correction • Active alarming and information • ASIC (Application Specific Integrated Circuit), micro-controller and EEPROM on one chip
Tried-and-tested housing • Ergonomic and robust ABS housing with rubber grip for secure handling