| 摘要 |
A porometry apparatus comprises a sample housing 10 containing a sample support 12, vacuum drawing means 32 connected by pipe 30 to the housing to one side of the support, and a wetting fluid tank 20 connected to the housing to the other side of the support such that wetting fluid from the tank can be drawn through a material sample 14 located upon the support to fully saturate the sample. The apparatus also includes gas supply means 44 whereby gas under pressure can be applied to the sample, wetting fluid reservoir 18 beneath the support, and a pressure control means for maintaining fluid pressure within the reservoir at ambient pressure. It may further comprise an outlet passage 26 connected to the reservoir 18 along which wetting fluid is displaced as it exits the sample, and monitor means 74 for monitoring the displacement of wetting fluid along the outlet passage. Detection means 86, 96 (Fig 2) may be located beneath the support to monitor for the emergence of a gas bubble 100 from a sample located upon the support. |
