Abstract
Piping and heat exchangers are some of the major equipments at process plants. Over time, these equipments are subject to aging related problems, which are mainly caused by scale adhesion and erosion-corrosion. The former decreases flow rate, pressure, and heat transfer performance, while the latter leads to breakage of pipes and heat exchanger tubes. Therefore, the purpose of this study is to develop a diagnostic method of diagnosing pipe thickness with a differential pressure transmitter. In this paper, the diagnostic method of diagnosing pipe inner diameter in a water line is developed experimentally. The method is based on the phase of the transfer function of the downstream pressure to upstream pressure at the test section. The experimental results show that this method is able to diagnose the inner diameter of straight pipes given any flow rate.
