Punto de rocío
Indicador clave de presencia de humedad en aire comprimido, gases industriales y secadores. Esencial para calidad de proceso y mantenimiento preventivo.
Dew point is the temperature at which air — or a gas — becomes saturated and water vapor starts to condense. Unlike relative humidity, it does not depend on process temperature: that makes it the preferred control variable when the goal is to prevent condensation or guarantee dry air — in compressed air, industrial drying and data center climate control.
Typical application areas
- Compressed air and pneumatic systems
- Desiccant and refrigerant air dryers
- Industrial drying — spray drying, ovens and paint booths
- Data centers
- Metal heat treatment
- Industrial and process gases
- Biogas
What makes Vaisala's DRYCAP® technology unique
Vaisala measures dew point with DRYCAP®, a capacitive thin-film polymer sensor specialized in very dry gases: the polymer absorbs and releases water molecules according to the humidity of the gas, changing the capacitance that the probe's electronics convert into a dew point reading. Two characteristics set it apart in industrial environments: the auto-calibration function, which corrects sensor drift automatically during operation, and condensation tolerance — the sensor recovers within minutes after getting wet, with no damage or loss of calibration.
- Dew point measurement in very dry gases, down to −80 °C
- Auto-calibration: corrects drift automatically during operation
- Fast recovery after condensation, with no sensor damage
- Long-term stability and low maintenance
- Fast response to humidity changes — key during process start-ups
- Probes for direct installation at line pressure or in sampling systems
AKRIBIS is an authorized Vaisala partner for distribution and technical support in the region — explore the full Vaisala instrumentation line. In moderate ranges, dew point is also available as a calculated parameter on the HUMICAP® humidity transmitters in the catalog; for the specific probe for your process, consult a specialist.
Areas where this magnitude is applied
Industries that monitor dew point
More on dew point
Dew Point in Compressed Air
Why dew point defines compressed air quality, how it is measured at line pressure or with a sampling cell, and what the ISO 8573-1 standard requires.
Ver más →
Dew Point in Data Centers
The ranges ASHRAE recommends, why dew point is a better control parameter than relative humidity, and how sensor accuracy impacts energy consumption.
Ver más →
Dew Point in Industrial Drying
Why industrial drying seeks the right balance between quality and energy consumption, and why HUMICAP® and DRYCAP® cover different humidity ranges within the same process.
Ver más →Dew Point in Metal Heat Treatment
Why the furnace atmosphere's moisture defines heat treatment quality, which dew point ranges are controlled depending on the process, and how to measure in high-temperature gases.
Ver más →Technical notes on humidity and dew point
Humidity Fundamentals, Part 1: Key Concepts
What relative humidity, dew point, absolute humidity and mixing ratio are, how temperature and pressure distort the reading, and why dew point is often a better control variable.
Ver más →
Humidity Fundamentals, Part 2: Practical Measurement
How humidity behaves in real conditions, the three most common measurement problems, and two practical scenarios —heated air and compressed air— solved with dew point.
Ver más →
How to Choose the Right Humidity Instrument
When to measure relative humidity vs. dew point, what high and low humidity demand, how temperature and pressure factor in, and when a warmed probe, a sampling system or an Ex-certified instrument is the right call.
Ver más →Instruments to measure dew point
DMP7
DRYCAP® dew point and temperature probe for tight spaces
Ver más →
DMT143
Miniature DRYCAP® dew point transmitter for OEM applications
Ver más →
DMT153
DRYCAP® dew point transmitter for ultra-dry processes
Ver más →
DPT145
Multiparameter transmitter for SF6 gas in switchgear
Ver más →
HMD60
Duct humidity and temperature transmitter for HVAC
Ver más →
HMT120/130
Humidity and temperature transmitters with exchangeable probe for cleanrooms
Ver más →
HMW90
Wall-mount humidity and temperature transmitters for building automation
Ver más →
Indigo500
Universal transmitter for Indigo-compatible probes
Ver más →
Indigo80
Handheld indicator for Indigo-compatible probes
Ver más →Do you need instruments to measure dew point?
Check availability, pricing, and technical support. An AKRIBIS ecosystem specialist will respond within 24 business hours.