Issue link: https://te.mouser.com/i/1382447
Predictive Maintenance with Vibration Sensors TE CONNECTIVITY SENSORS / WHITE PAPER PAGE 7 Sensor Output Options Depending on installation and application, a choice of sensor output signal options may be necessary. Most current predictive maintenance installations require an analog signal from the sensor so the end user can decide on which parameters to monitor for particular machinery. Typically, the signal output is driven by the DAQ or PLC interface and an analog output (±2V or ±5V) is the most common choice. However, for installations requiring long cable lengths, loop powered 4-20mA sensors are also common. For future digital factories and Industry 4.0, the need for digital output signals will become more common as will smart sensors with on board microprocessors that can make immediate maintenance decision for the end user. These output signal options will be available in both PE and VC MEMS sensors. Both technologies would have the capability to provide these functions. Summary Comparison Table All or some of the performance parameters discussed in the previous paragraphs will help the customer make an intelligent decision on the technology chosen for the condition monitoring installation. The table below provides a quick summary. CONCLUSION We have seen different technological features comparing MEMS and PE accelerometers. Both technologies are advantageous depending on the end application. In our case for industrial condition monitoring and predictive maintenance applications, piezoelectric sensors are the obvious choice, thanks to its proven technologies they stay reliable for long term stability. With its wide frequency response, the embedded PE accelerometers are ideal from low to high speed machinery, they also offer a better signal resolution for earlier failure detection. TE Connectivity (TE) is one of the largest sensor companies worldwide, with innovative sensor solutions that help customers transform concepts into smart, connected creations. Learn more about our broad accelerometer portfolio here. Key Parameter Piezoelectric MEMS VC Wide Frequency Response X Long Term Signal Stability X Dynamic Range X Operating Temp Range X X Packaging Options X X Ease of Installation X X Sensor Output Options X X PIEZOELECTRIC VS. MEMS VC PERFORMANCE COMPARISON