Articles | Volume 15, issue 3
Atmos. Meas. Tech., 15, 819–832, 2022
https://doi.org/10.5194/amt-15-819-2022

Special issue: Analysis of atmospheric water vapour observations and their...

Atmos. Meas. Tech., 15, 819–832, 2022
https://doi.org/10.5194/amt-15-819-2022

Research article 16 Feb 2022

Research article | 16 Feb 2022

Silicone tube humidity generator

Robert F. Berg et al.

Data sets

AMT-2021-217 (Berg, Chiodo, Georgin) Laboratory measurements of gas temperature, pressure, and flow rate Robert Berg, Nicola Chiodo, and Eric Georgin https://doi.org/10.5281/zenodo.5963596

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Short summary
We made a humidity generator that adds water vapor to a flowing gas. Its range of humidity is useful for calibrating balloon-borne probes to the Earth's stratosphere. The generator’s novel feature is a saturator that comprises 5 m of silicone tubing immersed in water. The length was enough to ensure that the saturator’s output was independent of the dimensions and permeability of the tube. This simple, low-cost design provides an accuracy that is acceptable for many applications.