Easy-to-use handheld meters are intended for spot-checking and calibration. The meters have a multilingual user interface and a variety of parameters to choose from, including humidity, dew point, CO2, and moisture in oil. The large graphical user interface enables monitoring the stabilization of the measurement


Modular spot-checking for various parameters

Handheld measuring devices are typically used for measuring environmental or process conditions directly, or
as reference instruments for spot-checking or calibrating a fixed instrument in the field.

Vaisala handhelds are designed for demanding measurements in spot-checking applications. They are also ideal for field checking and calibration of Vaisala's fixed instruments. Handheld meters cover a range of measurements:

  • temperature
  • humidity
  • dew point
  • carbon dioxide
  • moisture-in-oil  

Each application can be addressed individually, or the probes can be easily changed for multi-parameter purposes.

Do you want to ensure your fixed instruments are indicating the correct numbers? Handhelds are specifically suitable for short-term measurements, either spot-checking or logging data for short period at specific point. With handhelds, it's easy to spot the incorrect device in multiple applications. The devices are light and portable, but still robust, intelligent, and intended for professional usage.

Key features

  • High-quality accuracy
  • Designed for professionals
  • Possibility to measure two parameters simultaneously
  • Light and portable
  • Easy to send to factory calibration

Download eGuide for spot-checking and calibration

HMP80L and HMP80S humidity and temperature handheld probes

HMP80 HUMICAP® Handheld & Temperature Probes

The HMPP80 is designed for applications which involve high humidity or rapid changes in humidity such as drying and test chambers, combustion air, and other environments where humidity and temperature measurement performance and chemical tolerance are essential.

The Vaisala CARBOCAP® Hand-held Carbon Dioxide Meter GM70 is a CO2 measuring device or CO2 meter, that measures volume concentration of CO2 in the units of ppm or %.

Handheld CO₂ Meter GM70

The Vaisala CARBOCAP® Hand-held Carbon Dioxide Meter GM70 measures volume concentration of CO2 in the units of ppm or %.

DM70 Hand-Held Dewpoint Meter

Handheld Dewpoint Meter DM70

Handheld Dewpoint Meter DM70 for spot-checking applications and field calibration offers accurate and fast measurement for industrial dew point applications, such as compressed air, metal treatment, additive manufacturing as well as food and plastics drying.

Vaisala HUMICAP® HM70 Handheld humidity meter is designed for demanding humidity measurement in spot-checking applications.

Handheld Humidity and Temperature Meter HM70

Vaisala HUMICAP® HM70 Handheld is designed for demanding humidity measurement in spot-checking applications. It is also ideal for field checking and calibration of Vaisala's fixed humidity instruments.

Vaisala Humidity Calibrator HMK15

HMK15 Humidity Calibrator

Vaisala Humidity Calibrator HMK15 makes calibration and spot checking of humidity probes and transmitters easy and reliable.


In this eGuide, we discuss the rationale behind device calibration and the factors that affect the need to spot-check and calibrate. The guide also provides some detailed information on the calibration and spot-checking of various parameters, including relative humidity, dew point temperature, carbon dioxide, temperature, and moisture-in-oil measurements.



Software for MI70 handhelds

The optional MI70 Link Windows® software in combination with a USB connection cable is used to transfer logged data and real-time measurement data from the HM70 to a PC.

Software for Indigo80 Handhelds

To access logged data and configuration functionality, Indigo80 can be connected with a USB-C cable to Vaisala Insight PC software for Windows®. 


Calibration services

Regular calibration of all measurement instruments is essential to ensure accuracy. We recommend sending your instruments to the original manufacturer for calibration whenever possible, especially handheld reference meters. Learn more in this blog post.

As a manufacturer, Vaisala offers a wide range of high-quality calibration and repair services that meet the strictest quality standards.

All our calibrations include:

  • Functional testing
  • Traceable calibration
  • Instrument adjustment as needed
  • Filter replacement as needed
  • Calibration certificate and service report
  • Calibration due-date update