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Humidity - Measurement and Monitoring of relative Humidity

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Find out in this short film how relative humidity (RH) arises, how it is measured and why.


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The main fields of use for humidity measuring equipment lie in the pharmaceutical and food industries, heating, ventilation and air-conditioning (HVAC) applications as well as drying processes and storage. Measurement of air humidity moreover plays a key role in meteorology, while archives and museums also use data loggers or humidity measuring instruments. Apart from humidity, temperature is often also measured. Rotronic humidity measuring instruments therefore usually also measure temperature at the same time.

Do you already know our free Humidity Calculator for dew point, specific humidity and relative humidity?

Humidity Calculator (Online Tool)

Recommended Products for humidity and temperature measurement:

  1. BL-1D - Data Logger for barometric pressure, humidity temperature and dew point

    BL-1D - Data Logger for barometric pressure, humidity temperature and dew point

    Barometric pressure, humidity temperature and dew point data logger. Compact, dependable and inexpensive. Learn More
  2. HC2-ICxx without filtre

    HC2A-ICXXX - High Temperature Industrial Humidity Probe

    The Rotronic industrial probe is especially suitable for high temperatures up to 200 °C and demanding industrial environments. It measures relative humidity and temperature and is compatible with the HF5, HF8 series measurement transmitters, HP32 and HP23 handheld devices and the HL-NTdataloggers. Applications: industrial manufacturing, drying processes and climate chambers. Learn More
  3. HC2A-S - Humidity Probe

    HC2A-S - Humidity Probe

    The HC2-S / HC2-S3 is the most versatile probe from ROTRONIC and forms the basis of the product portfolio. It measures humidity and temperature and calculates the dew/frost point. Learn More
  4. HC2A-S3 - Standard meteo probe

    HC2A-S3 - Standard meteo probe

    The HC2A-S3 is the meteorological probe with a white housing - same specification overall as the HC2A-S probe but with a different filter (larger pore size suitable for meteorological applications). It measures humidity and temperature and calculates the dew/frost point with outstanding accuracy. Learn More
  5. HygroFlex3 - HF3 (R-Type)

    HygroFlex3 - HF3 - HVAC transmitter

    R-Type / S-Type
    Measures relative humidity and temperature and calculates the dew/frost point in offices and rooms where good looks play a role.

    W-Type / D-Type
    Measures relative humidity and temperature and calculates the dew/frost point in HVAC applications focused on relability and repeatability.

    Learn More
  6. HygroFlex5 - HF5 - HVAC TRANSMITTER

    HygroFlex5 - HF5 - HVAC TRANSMITTER

    The HygroFlex5-series is the latest development in measurement transmitters. Measures humidity, temperature and dew point. This measuring device calculates all the psychrometric parameters in the fields of pharmaceuticals, food, HVAC and across Industry. One outstanding feature of this measurement device is the possibility to output any psychrometric calculation as an analogue or digital signal. Learn More
  7. HygroFlex5-EX - HF5-EX - two-channel transmitter

    HygroFlex5-EX - HF5-EX - two-channel transmitter

    The new HygroFlex5-EX series is the latest development in two-channel transmitters for the exact measurement of humidity and temperature in explosive atmospheres. This device conforms to the latest international standards. Learn More
  8. HygroFlex8 - HF8 (Wallversion with display)

    HygroFlex8 - HF8 - transmitter

    Measures relative humidity, temperature and all calculated (psychrometric) parameters in the fields of HVAC, industry and pharmaceuticals. Learn More
  9. HygroGen2

    HygroGen2 - HG2-S - Humidity Generator

    Portable humidity and temperature calibrator. Generates stable humidity and temperature conditions for a wide range of customer set-points. HygroGen2 is a world leading temperature and humidity calibration solution for use both in the laboratory and also on site. Easy to set up and use. Calibrates multiple probes simultaneously (any manufacturer). Time saving, stable and minimal thermal gradients. Learn More
  10. HygroGen2

    HygroGen2 - HG2-XL - Humidity Calibrator

    Humidity and temperature generators for calibration of humidity and temperature measuring instruments. Calibrates multiple probes simultaneously. Large chamber volume with shelves, up to 8 probes can be calibrated simultaneously, multiple small loggers can be calibrated. Learn More
  11. HygroLog HL-1D - INEXPENSIVE DATA LOGGER

    HygroLog HL-1D - INEXPENSIVE DATA LOGGER

    Humidity and temperature data logger. Compact, dependable and inexpensive. HL-1D Data Logger fulfills the guidelines in accordance with EN 12830. Learn More
  12. HygroLog HL-20 (with display)

    HygroLog HL-20D - ECONOMICAL DATA LOGGER

    The compact data logger for humidity and temperature measurement offers high precision and reliability at a reasonable price. The HL-20 series is easy to use and deployable in a wide range of applications. Thanks to its integrated batteries, the HL-20 works completely independently and offers its users maximum flexibility. Learn More
  13. HygroPalm - HP23-A

    HygroPalm - HP23-A - multi-function hand-held indicator

    The HygroPalm23-A is the high-end product in our range of handheld instruments. Apart from measuring humidity and temperature, it also calculates all psychrometric parameters and offers various additional functions. The measurement results can be recorded continuously and these separated simply using the batch function. All ROTRONIC transmitters in the Airchip 3000 series can be adjusted with the HP23-A via a service cable. Learn More
  14. RMS - Rotronic Continuous Monitoring System

    RMS - Rotronic Continuous Monitoring System

    High quality standards in production and storage necessitate a comprehensive monitoring system that delivers measured data reliably. The adaptive RMS Rotronic Monitoring System is the perfect solution for a wide range of applications.

    Learn More