Because we at CSC Scientific provide test equipment for both on and off line moisture testing we have a unique and non-biased perspective on the question of on-line vs off-line. We developed six useful keys that can be used to resolve the dilemma of choosing between on-line and off-line moisture testing.
I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer and the other simply a tensiometer. The plain tensiometer works only with an upward pull and the interfacial works with both an upward pull as well as a downward push. Before I get to my question a couple of definition might be useful.