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TESTING TENSIOMETERS BY A VACUUM METHOD

W. E. PUCKETT, Jacob H. Dane

Abstract

We developed a quick vacuum method to test for and locate leaks in tensiometers. The method consists of first applying vacuum to a dry tensiometer to test for possible leaks at that end of the tensiometer that is connected to a manometer or other pressure-measuring device. Secondly, the tensiometer is subjected to vacuum after the porous cup has been thoroughly wetted. The latter should indicate any leaks in the porous cup itself or between the cup and the tensiometer tube. The method takes approximately 10 minutes of testing per tensiometer.

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Key concepts: Tensiometer (surface tension), Pressure measurement, Tube (container), Geotechnical engineering, Materials science, Mechanical engineering, Engineering, Composite material