VAISALA HM70 Hand-Held Humidity and Temperature Meter


Product Tags:
Product Tags:
Product Tags:
VAISALA HM70 Hand-Held Humidity and Temperature Meter


The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 is designed for demanding humidity measurements in spot-checking applications. It is also ideal for field checking and calibration of Vaisala's fixed humidity instruments.

The HM70 incorporates the latest generation of the Vaisala HUMICAP® Sensor. It is reliable and has better than ever long-term stability. Additionally, it has a sensor that copes well with chemical interference and provides accuracy that lasts in demanding conditions. The chemical purge option maintains measurement accuracy in environments with high concentrations of chemicals. The sensor preheat option reduces measurement delays as it keeps the sensor dry when the probe is inserted into hot and humid processes.

The HM70 includes an MI70 indicator and an optional probe depending on the application.

  • HMP75 with standard plastic grid
  • HMP75B (chemical purge and sensor preheating)
  • HMP76 with standard sintered bronze filter
  • HMP76B (chemical purge and sensor preheating)
  • HMP77 with standard plastic grid and stainless steel netting
  • HMP77B (chemical purge and sensor preheating)



  • RH measurement range 0…100 % RH
  • 3 probes, temperature measurement ranges between -70 and +180 °C
  • Multiprobe operation; dewpoint and CO2 probes can also be connected
  • Displays various humidity parameters
  • Sensor preheat and chemical purge options for demanding conditions
  • Traceable calibration (certificate included)


Key Benefits

Easy data logging - Data can be logged, and transferred to a PC via MI70 Link software.
Multilingual user interface - English, German, French, Finnish, Spanish, Swedish, Chinese, Russian or Japanese. Shows trends graphically.
Rugged and reliable - Suitable also for use in extreme conditions.

Click to view the datasheet

Sold Out
Product Images (click to enlarge)
  • VAISALA HM70 Hand-Held Humidity and Temperature Meter