Temperature and humidity

Service

An accurate knowledge of temperature and humidity is important in countless processes in industry and science. VSL provides clients with accurate temperature and humidity calibrations for a wide variety of instruments. VSL also carries out special measurement projects such as the characterization of advanced measurement systems.

Method

VSL realizes and maintains the full range of the current International Temperature Scale (ITS-90) from -273 °C to +3000 °C, through primary standards based on highly-reproducible phase transitions of ultra-high purity materials (temperature fixed-points). At VSL the clients’ thermometers are calibrated by direct comparison with the primary standards or by comparison with thermometers directly traceable to the primary standards.

Likewise dew-point hygrometers (e.g. chilled mirror hygrometers) are calibrated at VSL by direct comparison with a primary humidity standard that is based on the principle of complete saturation of a carrier gas at known temperature and pressure (dew-point generator). Other humidity sensors are calibrated in a climatic chamber by comparison with chilled mirror hygrometers directly traceable to the primary standard.

Application and clients

Clients of VSL often have a direct or indirect interest in process applications in which temperature and humidity play an important role. Examples of this can be found in the petrochemical industry, energy production, health care and environment. VSL also provides its services to manufacturers of sensors and to calibration laboratories.

More information

For more information about this service, feel free to contact our Sales and Planning staff. They will be pleased to provide you with an adequate and expert answer. Please send an email to vsl@vsl.nl or you can call +31 15 269 15 50.