Operation of digital Micro-Electromechanical sensor technology in turbomachinery diagnostics systems

Rotating machine failures cause major production losses, representing 15–60% of operation costs. Predictive maintenance, particularly vibration analysis, is widely used to detect and prevent faults. While traditional vibration sensors are effective, their high cost limits broad adoption, especially in cost-sensitive industries. This study explores the feasibility of micro-electromechanical systems (MEMS)-based accelerometers for turbomachinery vibration monitoring. Controlled laboratory tests with a modal exciter evaluated MEMS sensor performance, focusing on signal clarity, frequency response, and data acquisition. Results were compared to those from an industrial-grade velocity transducer (Bently Nevada Seismoprobe). The results show that MEMS accelerometers can provide sufficiently accurate vibration measurements, supporting their use as cost-effective alternatives for basic condition monitoring. This study highlights the ability of MEMS sensors to deliver acceptable signal quality for practical vibration analysis, with implications for their use in broader industrial applications.