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Rotronic HP21 HygroPalm RH/Temp Meter

Brand: Rotronic
Product Code: HP21
Rotronic HP21 HygroPalm RH/Temp Meter
Ex VAT £254.00 Inc VAT £304.80

Availability: In stock


Product Description

Rotronic HygroPalm handheld instruments are universally recognised as some of the very best available in terms of accuracy, reliability and function. These latest units offer a high standard of build, to will provide you with years of dependable measurements.

With its fixed probe, the HygroPalm HP21 is our most cost-effective instrument, yet it still boasts a ±1% accuracy specification and a PC interface for configuration and probe log data download.

The HP21 is a highly accurate handheld indicator that displays relative humidity, temperature and dew or frost point temperature. The HP21 is perfect for spot checking HVAC installations, manufacturing or storage areas and any ambient air measurement within the temperature range of -10 to 60°C (14 to 140 °F). The HP21 is designed to meet a wide range of user requirements from the most basic applications to the most demanding applications.

The HP21 indicator offers an extensive set of settings and functions that can be configured and enabled by the user with the ROTRONIC HW4 software. In spite of its high end design, the HP21 is ideal even as a simple humidity and temperature indicator.


Mobile inspection and random tests in HVAC, the pharmaceutical industry and building management systems


  • Integral sensors

  • Range of application -10…60 °C / 0…100 %rh

  • Accuracy at 23°C ±5 K: 1 %rh, 0.2 K

  • Adjusted at 23 °C and 10, 35, 80 %rh

  • Service interface (UART)

  • Calculation of dew and frost point.


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Availability: In stock

Additional Information

Additional Information

Maximum Temperature +60
Typical Applications Building Performance, Environmental (Indoor), HVAC
Data Available By Display, RS485, USB
Measurements Humidity, Temperature