Talk:Units for Moisture Measurement

I would rather call this article Parameters for Moisture Measurement

Author: Hans-Jürgen Schwarz

back to Moisture Maybe rather Material Moisture Content?

Key parameters

Commonly used parameters are:

• Mass related moisture content
• Volume related moisture content
• Saturation humidity: maximum capillary moisture content /absorption at atmospheric pressure or vacuum (by immersion)
• Equilibrium moisture content: moisture absorption due to hygroscopicity
• Maximum degree of pore filling
• Hygroscopicity related degree of pore filling

Table 1: Parameters for the moisture related characterization of a material

Parameter	Equation	Explanation
Mass related material moisture content um in [M%]	$u_{m}={\frac {m_{W}}{m_{T}}}\cdot 100={\frac {m_{F}-m_{T}}{m_{T}}}\cdot 100$	mW = Mass of water sorbed by the sample in [g] mF = Mass of the humid sample in [g] at sample collection mT = Mass of the dry sample in [g] (from the moment of drying up to a constant weight)
Volume related material moisture content uv in [Vol%]	$u_{V}={\frac {V_{W}}{V_{T}}}\cdot 100=u_{m}\cdot {\frac {\rho _{T}}{\rho _{W}}}$	VW = Volume of the water sorbed by the sample in [cm³] VT = Volume of the dry sample at sample collection in [cm³] um = Mass related moisture content in [M.%] $\rho$T = Density of the dry sample in [g/cm³] $\rho$W = Density of the water in [g/cm³]
Saturation humidity of a material us in [M%]	Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. TeX parse error: Double subscripts: use braces to clarify"): {\displaystyle u_{S}={\frac {m_{F}_{S}-m_{T}}{m_{T}}}\cdot 100}	mFS = Mass of the moisture saturated sample [g] mT = Mass of the dry sample in [g]
Hygroscopicity related equilibrium moisture content of a material uA in [M%]	Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. TeX parse error: Double subscripts: use braces to clarify"): {\displaystyle u_{A}={\frac {m_{F}_{A}-m_{T}}{m_{T}}}\cdot 100}	mFA = Mass of a sample after hygroscopic moisture absorption mT = Mass of the dry sample in [g]
Total degree of pore filling PFGG in [M%]	$PFG_{G}={\frac {u_{m}}{u_{S}}}\cdot 100$	um = Mass related moisture content in M.% us = Saturation humidity in [M%]
Hygroscopicity related degree of pore filling PFGH in [M%]	$PFG_{H}={\frac {u_{A}}{u_{S}}}\cdot 100$]	uA = Hygroscopicity related equilibrium moisture content in M.% us = Saturation moisture content in [M%]

--SLeithaeuser 21:59, 27 January 2013 (CET)