Air Humidity Measurement

From Saltwiki
Revision as of 18:34, 29 September 2012 by Hschwarz (talk | contribs) (Created page with "Author: Hans-Jürgen Schwarz <br><br> back to Climatic measurements <br><br> == Overview of the chapter for measuring humidity == *...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Author: Hans-Jürgen Schwarz

back to Climatic measurements

Overview of the chapter for measuring humidity

Introduction

Air is a mixture of gases. The main components are summarized in table 1. In addition to these components, the air always contains a small amount of water, which exists in three states of matter:

  • solid: ice, hail, snow
  • liquid: rain, fog, dew
  • gas: water vapor



Table 1: Composition of the air
Gas Symbol Content in Vol. %
Nitrogen
Oxigen
Argon
N2
O2
Ar
78
21
0,8
Krypton
Xenon
Neon
Helium
Hydrogen
Carbon dioxide
Methane
Ozone
Kr
Xe
Ne
He
H2
CO2
CH4
O3
Trace gases


Water is the only gas in the atmosphere that is present in its three states of matter. For the building trade, this leads to some undesirable phenomena such as condensation, corrosion and frost. In addition to temperature, humidity is the main indicator for describing the climate. Relative humidity, for example, influences our wellbeing to a great extent.