Humidity Measurement and Calibration


An NPL scientist uses a humidity subchamber


Humidity and temperature are important physical quantities. Their measurement plays a key part in industrial quality and process control, in the efficient use of energy and other resources, in condition monitoring and in health and safety. Humidity affects the thermal, electrical, optical and transport properties of gases and is important for human comfort. Organic and many non-organic materials contain water and tend towards being in equilibrium with the surroundings. Consequently, there are humidity implications in conservation, testing and manufacture.

This two-day course features a tour of the NPL Humidity laboratory and ‘hands-on’ sessions.

Topics covered during this course include:

  • Humidity measurement techniques and instrumentation
  • Practical use of instruments
  • Calibration, traceability and measurement uncertainty
  • Examples of good practice
  • Calculations and conversions between different units related to humidity


Learners will receive an NPL Certificate of Attendance.

Please contact us to enquire about the next delivery date.

Learning Outcomes

  • To understand measurement techniques and instrumentation
  • To be able to undertake practical use of instruments and calibration
  • Explore examples of good practice and calculations/conversion between different units