Moisture measurement in chemicals production and storage

Relative humidity, absolute humidity and temperature measurements for efficient and safe chemicals drying, processing and storage.


In chemical industry, moisture analysis is required for ensuring smooth drying operations such as spray drying or vacuum drying. By measuring accurately relative humidity (RH), absolute humidity, dew point and temperature, chemicals manufacturer can be certain there is no quality deviations in the produced powdered chemicals, the drying process is efficient, and use of energy is optimized.

Moisture monitoring is also needed in storages of chemicals to preserve the quality of the final product and prevent the risk of chemical reaction and explosion. Humidity control is also crucial for preserving hygroscopic substances and preventing powder caking.

Finally, conditions monitoring, and humidity control are required for ensuring safe environment where glove boxes, reaction chambers and vacuum chambers are used.

Vaisala's HUMICAP® and DRYCAP® technologies for improved chemical tolerance

Vaisala HUMICAP® humidity and DRYCAP® dew point sensors both feature good chemical tolerance. For especially demanding applications Vaisala has developed chemical purge function, which helps to maintain measurement performance under chemical exposure. This is a unique feature that helps to correct possible long-term drift of the instruments and extends the required calibration interval in environments where gaseous chemical impurities are present. Hydrocarbon based solvents, cleaning chemicals and sterilizing agents are all chemicals with a tendency to penetrate into the sensor. They all can be driven out using chemical purge.

Learn more on humidity and dew point measurement or search for humidity products and dew point products.

Do you have questions regarding your measurement needs? Drop us a line - we are happy to help.

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Vaisala Jade Smart Cloud for real-time data storing and access via cloud

With Vaisala Jade Smart Cloud system you can store the humidity and temperature monitoring data to a cloud in real-time and access it, for example, for reporting purposes. Our cloud solution combines several advanced technologies that make it extremely reliable:

  • Scalability: As a modular system, Jade Smart Cloud can be scaled easily for a variety of purposes. Users can simply set up as many loggers and access points as they need and add more as their needs change. 
  • Cloud storage: All data collected is stored in the cloud, meaning there’s no need to worry about IT infrastructure, security, system maintenance, or setting aside server space for data storage.
  • Extremely good radio connectivity: Jade Smart Cloud’s wireless connectivity is based on LoRa radio technology, which is already widely respected. Vaisala has pushed it even further with modified features to ensure that it meets our customers’ most demanding requirements.
  • Regular firmware updates: Jade Smart Cloud’s software updates automatically, with no action needed from the end user as the new firmware version is installed directly onto the local system from the cloud.
  • Vaisala HUMICAP® sensors: Because the system uses proven HUMICAP sensors, it provides extremely stable and high-quality measurements.

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Vaisala humidity calculator

Relative humidity, absolute humidity, wet-bulb temperature, enthalpy, water concentration, and many more. Humidity calculations and conversions made easy.

Humidity Calculator

Drying simulator

Use our interactive drying simulator to learn how exact humidity measurements can lead to more efficient energy use and higher yields.

Drying simulator

Intrinsically Safe Humidity and Temperature Transmitter Series HMT370EX

The intrinsically safe HMT370EX is the ideal solution for use in hazardous areas up to zone 0 and 20. In addition to measuring relative humidity and temperature, the transmitter outputs also other humidity parameters: dew point temperature, wet-bulb temperature, absolute humidity, mixing ratio, water concentration, water mass fraction, water vapor pressure, and enthalpy. 

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Vaisala Indigo family, a customizable instrument platform designed to improve process measurements

The Vaisala Indigo family is a customizable instrument platform designed to improve process measurements. The Indigo family's key feature is modularity. It contains a selection of transmitters, interchangeable smart probes that measure various parameters, and software for easy interfacing and monitoring of data. Choose any probe and connect it with any of the transmitters, or integrate the probes into other systems. The Indigo platform is built on top of Vaisala’s self-produced, core sensor technologies.

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Product highlights

Indigo520 with probe

Indigo500 Series Transmitters

The Vaisala Indigo500 series transmitters are host devices for Vaisala Indigo-compatible, stand-alone smart probes. The Indigo500 series include multi-functional Indigo520 transmitter and Indigo510 transmitter with basic features.
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Jade Smart Cloud

Combining industrial-grade measurements with secure and reliable wireless monitoring, Vaisala Jade Smart Cloud brings new levels of proficiency and flexibility for professionals.

Weather Transmitter WXT530 Series

The perfect mix of accurate air pressure, temperature, humidity, rainfall, wind speed, and wind direction data to measure weather conditions without the expense or magnitude of an automatic weather station.
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.
Probe head and probe body of the DMP6 for very high temperatures

Dew Point Probe DMP6

Vaisala DRYCAP® Dew Point and Temperature Probe DMP6 is designed for in-line humidity measurement in industrial drying applications with very high temperatures and a wide dew point range.
Vaisala Temperature Probe TMP1 is designed for demanding temperature measurements in industrial applications.

Temperature Probe TMP1

Vaisala Temperature Probe TMP1 is designed for demanding temperature measurements in industrial applications such as pharmaceutical industry and calibration laboratories, where accuracy and robustness are essential.
Vaisala HUMICAP® Humidity and Temperature Probe HMP5 is designed for high temperature applications

Relative Humidity and Temperature Probe HMP5

Vaisala HUMICAP® Humidity and Temperature Probe HMP5 is designed for high temperature applications such as baking ovens, pasta dryers, ceramics and industrial drying kilns where measurement performance and chemical tolerance are essential.

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