Vaisala HM40 Series HUMICAP Handheld Humidity and Temperature Meter

The Vaisala HM40 Series HUMICAP® Handheld Humidity and Temperature Meter is compact and easy to use. It is ideal for quick inspections and spot-checking in wide variety of applications from structural moisture control and air conditioning systems to industrial production processes and life science applications. It has an intuitive and multilingual user-interface and ten language options. Multiple calculated parameters are available: dew point, wet bulb temperature, absolute humidity, mixing ratio, and enthalpy.



  • Compact, portable, and easy to use
  • Versatile meter with wide measurement range and multiple calculated parameters
  • Ideal for spot-checking in a wide variety of applications
  • Humidity measurement range 0 … 100 %RH
  • Temperature measurement ranges -40 … +100 °C (-40 … +212 °F), depending on probe model
  • Incorporates proven Vaisala HUMICAP® sensor technology
  • Calibration reminder function


  • HM41
  • HM42
  • HM45
  • HM46