Water (H2O) can present itself in three different forms: solid (ice), liquid (water), and gas (humidity). Humidity is an invisible gas that can be measured and defined with different parameters. Relative humidity indicates the present state relative to maximum humidity in a given temperature. Dew point temperature indicates the temperature to which air needs to be cooled in order to reach condensation. For industrial-scale manufacturing, controlling these parameters is a must for good quality end-products and efficient manufacturing processes.
Get to know Vaisala’s reliable and durable measurement solutions for humidity, dew point, and moisture.
Humidity
Humidity is measured in many air control applications, where the relative humidity is for the most part over 10 %. Relative humidity (RH) is a measure of the water vapor content of air. For more information, read the article what relative humidity is and why it is important.
Find humidity measurement products by typical applications:
test chambers, building automation and HVAC, spray drying, paint booths, biogas production, and bio-decontamination.

White paper: Controlling high-humidity applications with dew point temperature
This white paper is a vital resource for anyone aiming to maintain a controlled environment in a high-humidity application.

Dew Point
Dew point measurements are needed when controlling air in dry processes, usually with relative humidity below 10 %. For more information about dew point, read the article "What is dew point and how to measure it?". Find dew point measurement products by typical application: compressed air drying, fluid bed drying, 3D printing, lithium-ion battery manufacturing, and semiconductor manufacturing.

Moisture
Avoiding moisture in concrete or structures requires high quality measurement. Moisture measurements are essential also when there is a need to protect engines or to ensure high-quality oil with moisture in oil measurements

Dew point temperature or frost point temperature?
Select the correct parameter output to low humidity applications
Sometimes, the terms are mixed in the industrial language, and dew point temperature might actually refer to frost point temperature.
Read Vaisala's recommendations here (PDF)

Humidity Control in Hazardous Locations
Humidity control is critical in many spaces where flammable or explosive materials such as fuels, chemicals, explosives are being stored. These spaces are designated as hazardous due to potentially explosive atmospheres. They require specially designed and approved instruments for safe operation.
Vaisala's intrinsically safe humidity instrument for hazardous locations is the HMT370EX Humidity and Temperature Transmitter.

High-quality measurement benefits
Energy-savings
End-product quality
Safety & well-being

Vaisala humidity calculator
Relative humidity, absolute humidity, wet-bulb temperature, enthalpy, water concentration, and many more. Humidity calculations and conversions made easy.
Trusted HUMICAP® and DRYCAP® technologies
Humidity and Multigas Measurements with CARBOCAP® and PEROXCAP®
With our continuous research and development efforts, we have been able to combine humidity measurement possibilities also with other parameters and technologies. We developed the CARBOCAP® technology originally for measuring CO2, but the technology is well suited also for optical humidity and methane measurements in biogas applications. Vaisala’s PEROXCAP® technology was developed for measuring humidity, vaporized hydrogen peroxide and temperature for easy validation of hydrogen peroxide bio-decontamination of isolators and facilities.
Humidity measurement product highlights for HVAC

Indigo Family - the modular platform

Humidity and Temperature Transmitters HMT120/130

CO2, Temperature and Humidity Transmitter Series GMW90

Humidity and Temperature Transmitter Series HMW90

Duct Humidity and Temperature Transmitter HMD60
Dew point measurement product highlights for industrial drying

Dew Point Probe DMP6

Dew Point and Temperature Probe DMP7

Dew Point and Temperature Probe DMP8

Dew Point Transmitter DMT152

Miniature Dew Point Transmitters DMT143 & DMT143L (Long)
Webinars, blogs and more

Contact us for more info
Interested to learn more about our humidity or dew point measurement offering? Drop us a line, and we'll get back to you.
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