Application Notes
22
Hydromette BL Compact TF-IR
4 Application Notes
On the following pages, you will find information on the various
measuring modes of the BL Compact TF-IR (Sections 4.1, 4.2 and
4.3) and on how to use the unit.
4.1
Measuring Air Humidity
4.1.1
Absolute Humidity
The amount of water vapour in g/m³ in the air is termed absolute
humidity. The amount of water vapour cannot exceed a fixed
specified amount.
H𝑢𝑚𝑖𝑑𝑖𝑡𝑦 (𝑎𝑏𝑠. ) =
𝑀𝑎𝑠𝑠 𝑜𝑓 𝑤𝑎𝑡𝑒𝑟 (𝑔)
𝐴𝑖𝑟 𝑣𝑜𝑙𝑢𝑚𝑒 (𝑚
3
)
4.1.2
Moisture Saturation
Moisture saturation is the maximum amount of water that can be
contained in a certain volume of air. The higher temperature the
larger the amount of water that can be held in the air.
𝐻𝑢𝑚𝑖𝑑𝑖𝑡𝑦 (𝑠𝑎𝑡. ) =
𝑀𝑎𝑥. 𝑚𝑎𝑠𝑠 𝑜𝑓 𝑤𝑎𝑡𝑒𝑟 (𝑔)
𝐴𝑖𝑟 𝑣𝑜𝑙𝑢𝑚𝑒 (𝑚
3
)