Water (H2O) can take many forms and we can measure it as temperature dependent invisible gas known as humidity, as pressure dependent dew point or in liquid form as moisture.

Oil rig pipes leading to sea

Moisture

Moisture measurements are essential when there is a need to protect engines or to ensure high-quality oil with moisture in oil measurements. Avoiding moisture in concrete or structures also requires high quality measurement. Find related moisture measurement products by typical applications: power transformers, lubrication systems, and structural moisture.

Benefits with high-quality H2O measurement

Energy-savings

Especially in drying applications, accurate humidity measurement can bring significant savings in both energy and costs. By knowing the humidity level you can, for example, avoid over-drying and heating the air too much.

End-product quality

Exact humidity data helps you optimize your production process and facilities, as well as make sure that the humidity level in your end-products is just right. Depending on the product, it can mean for example longer shelf life or improved stability.

Safety & well-being

Humidity control in facilities and moisture control in structures improve both safety and well-being when the air is optimized for breathing and the formation of mold is avoided. Controlling process humidity is also crucial for safety and well-being.

Trusted HUMICAP® and DRYCAP® technologies

We have been the industry leader in humidity measurement for over 40 years and is able to create solutions even for very demanding measurement conditions. Vaisala’s HUMICAP® and DRYCAP® technologies have been trusted for decades due to their accuracy and stability. Both technologies include capacitive thin-film polymer sensors. The polymer’s dielectric constant has been linearized with humidity variations to guarantee an unbeatable accuracy level up to 1 % RH (aw 0.01). DRYCAP also incorporates a patented auto-calibration function, which optimizes the stability at low dew points.

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.

Related products

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.

Precipitation

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.

viewLinc Monitoring, Alarming and Reporting Software

The viewLinc Enterprise Server software monitors temperature, relative humidity, CO2, differential pressure, level, door switches, and more, offering low cost of ownership due to easy connectivity to your existing network, remote access, and scalability up to thousands of monitored locations.

Vaisala Insight Software gives quick access to the configurations and data of the Indigo family measurement probes and other supported devices.

Insight PC Software

Vaisala Insight PC Software gives quick access to the configurations and data of the Indigo family measurement probes and other supported Vaisala devices.

Dew Point Meter DMT132

Vaisala HUMICAP® Dewpoint Transmitter DMT132 is an affordable dew point measurement instrument designed to verify the functionality of refrigerant dryers.

Dew Point Transmitter DMT152

The Vaisala DRYCAP® Dewpoint Transmitter DMT152 is designed for measuring low dew point in OEM applications, even down to -80°C.

Dew Point Transmitters DMT345 and DMT346

The Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346 are designed for humidity measurement in industrial drying applications with particularly high temperatures. 

Humidity and Temperature Transmitter Series HMS80

A reliable basic outdoor humidity sensor for a pole or wall installation. Dew point, wet bulb and enthalpy outputs can be selected by dip switch instead of the default RH output. 5-year warranty is valid for instruments purchased in 2021 and beyond.

Digital Open Frame Humidity Module HMM105

An open frame module for integration into environmental chambers and incubators. The module incorporates the Vaisala HUMICAP® 180R sensor which ensures excellent measurement accuracy. A reliable choice for OEM use.

HMM170 Probe

Humidity and Temperature Module HMM170

Vaisala HUMICAP® Humidity and Temperature Module HMM170 is a robust open frame transmitter for integration into environmental chambers that need accurate and reliable measurement even in demanding conditions including vacuum or high pressure.

The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers.

Humidity Module HMM100

The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers. The modules provide a single analog output channel for relative humidity (RH) or dew point (Td).

Humidity and Temperature Probe HMP3

Vaisala HUMICAP® Humidity and Temperature Probe HMP3 is a general-purpose probe designed for processes with moderate humidity and temperature levels.

HMP60 Humidity and Temperature Probe

HMP60 is a simple, durable and cost-effective humidity probe suitable for volume applications, integration into other manufacturers' equipment, incubators, glove boxes, greenhouses, fermentation chambers and data loggers.

The Compact Vaisala HUMICAP® Humidity and Temperature Probe HMP9 is designed for easy installation in rapidly changing environments.

Compact Humidity and Temperature Probe HMP9

The Vaisala HUMICAP® Humidity and Temperature Probe HMP9 is designed for easy installation in rapidly changing environments where a fast response time, measurement performance, and chemical tolerance are essential.

Relative Humidity and Temperature Probe HMP4

Vaisala HUMICAP® Humidity and Temperature Probe HMP4 is designed for high-pressure applications such as compressed air systems in maritime, breathing air, and industrial applications, where measurement performance and chemical tolerance are essential.

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.

Relative Humidity and Temperature Probe HMP8

Vaisala HUMICAP® Humidity and Temperature Probe HMP8 is designed for pressurized applications in compressed air systems, refrigerant dryers, and other pressurized industrial applications where easy insertion and removal of the probe and adjustable installation depth into the pipeline are needed.

Indigo Selector screenshot

Indigo Selector

Discover your ideal Indigo compatible probe and transmitter combinations with the Indigo Selector tool.