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Metrology

Humidity metrology

News and Updates

Jacob Ricker

Making an Airtight Case for Freedom

President Abraham Lincoln’s first handwritten draft of the Preliminary Emancipation Proclamation, a historic document in the collection of the New York State

Projects and Programs

Material Qualification

Ongoing
Objective To develop, utilize, and analyze methods of characterizing the precursor materials in additive manufacturing in both virgin and recycled states with the goal of advancing measurement science to benefit the AM community. The components of principal interest will include the rheological
GH_gascollectionsys

Humidity

Ongoing
Our goals include: Providing SI traceability of humidity standards through use of standardized realization methods, and supporting humidity measurements in the U.S. and abroad through calibrations and proficiency testing Ensuring the equivalence of US humidity standards with those of other countries

Precursor Material Qualification

Completed
To develop, utilize, and analyze methods of characterizing the precursor materials in additive manufacturing in both virgin and recycled states with the goal of advancing measurement science to benefit the AM community. The components of principal interest will include the rheological, size

Humidity Calibration Services at NIST

Ongoing
Humidity calibration services at NIST are performed with its primary standard humidity generator, the Hybrid Humidity Generator (HHG). The HHG produces humidified air of known moisture content over the dew/frost-point range from -90 °C frost point to +85 °C dew point, which corresponds to a water

Publications

ITS10 Conference Digest

Author(s)
Christopher W. Meyer, Kathryn Miller, Weston L. Tew, Howard W. Yoon
The 10th International Temperature Symposium (ITS10) was held in Anaheim California on April 3rd to 7th, 2023. More than 180 abstracts were received and

Silicone tube humidity generator

Author(s)
Robert F. Berg, Nicola Chiodo, Eric Georgin
We describe the model and construction of a two-flow (or divided-flow) humidity generator, developed at LNE-CNAM, that uses mass flow controllers to mix a

Tools and Instruments