| 要約: | Piping systems are present in various industries, including power generation, oil and gas, and chemical processing plant. These systems are subjected to vibrations due to factors such as resonance, fluid flow, pressure fluctuations, and external disturbances. Excessive vibration can lead to pipe fatigue, joint leaks, and even catastrophic failures. Therefore, accurate measurement and monitoring of piping vibration are crucial for ensuring the safety and reliability of these systems. Vibration measurement using portable diagnostic instrument is commonly used for field measurements of piping vibration. This method typically employs piezoelectric sensors that convert mechanical vibrations into electrical signals. The accuracy of vibration measurements using handheld method can be influenced by various factors, including the user's technique, environmental conditions, and the properties of the piping system itself. One factor that has received limited attention in the literature is the effect of insulation thickness on the accuracy of vibration measurements. Piping insulation is often used to prevent heat loss, maintain process temperatures, and protect personnel from burns. However, the presence of insulation can introduce an additional layer between the pipe and the sensor, potentially affecting the transmission and measurement of vibration signals. This research paper aims to investigate the effects of different insulation thicknesses on the accuracy of piping vibration measurement using portable diagnostic instrument. The findings show that the amplitude of measurement increases with increasing insulation thickness. Loose insulation is found to give higher amplitude deviation compared to a good insulation condition. This trend is particularly noticeable at 100 Hz, where the highest amplitudes were observed. Overall, the study emphasizes the importance of considering insulation thickness and condition when taking vibration measurement on piping systems. © 2024 IEEE.
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