Humidity measurement and control is called for in a wide variety of industrial applications. Each application has a different set of requirements for humidity instruments, such as required measurement range, tolerance to extreme temperature and pressure conditions, ability to recover from condensation, ability to operate in hazardous
environments, and options for installation and calibration. There is no single device that is suitable for all needs. In fact, the range of available equipment is quite large, varying both in cost and quality.

Read more about this subject which discusses the following topics in order to help in selecting the right humidity instrument:

  • Different humidity parameters:

Explanations of relative humidity, dew point temperature, parts per million, frost point temperature, mixing ratio, wet bulb temperature, enthalpy, water activity, absolute humidity

  • Environmental conditions that influence the choice of humidity instrument:

how to select a right location for the measurement instruments, taking temperature differences, level of humidity, pressure, hazardous environments, other external conditions like vibration or shock etc. into account when mounting measurement probes

  • Sensor properties that influence the choice of humidity instrument:

response time, optimal measurement range, chemical tolerance, accuracy

  • Practical guidelines for selecting a humidity instrument

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Vaisala offers reliable and accurate humidity measurement instruments from hand-held meters to fixed transmitters and modules/OEM products. There are products suitable for many different use environments including hazardous areas where intrinsically safe products are needed.  You can find more information about Vaisala’s humidity products at