Choosing the right vibration sensor for your application can be a complex process, but here are some key factors to consider:

1. Sensitivity: The sensitivity of the sensor should be suitable for the specific application. It is important to choose a sensor with the right sensitivity range to accurately measure the vibration of the system being monitored.

MMF’s KB12VD and KS48C product lines offer sensitivity up to 1000mV/g. The piezoelectric accelerometers on this page are intended for the measurement of the lowest vibrations. Typical fields of application include the monitoring of buildings, dams, bridges, oil platforms, and pipelines. These sensors are often called seismic accelerometers because they are used to monitor construction activity, volcanoes, and earthquakes. Their high sensitivity is achieved -unlike other high-sensitivity accelerometers- by the sensing element itself and not by internal amplification. This results in the highest resolution and the lowest noise.

Model KB12VD has an unusual design featuring air damping for a low resonance peak and friction coupling for overload protection.

2. Frequency range: The frequency range of the sensor should match the frequency range of the vibration being monitored. Make sure to choose a sensor with a frequency range that covers the full spectrum of vibration that is being monitored.

3. Dynamic range: The dynamic range of the sensor should be suitable for the application. A high dynamic range is desirable if the vibration amplitude varies greatly.

4. Output signal: The output signal of the sensor should be compatible with the data acquisition system. Some sensors provide a voltage output, while others provide a current output or IEPE signal

5. Environmental conditions: The sensor should be able to operate in the specific environmental conditions where it will be used, such as temperature, humidity, and exposure to dust or debris. Models KS56 and KS57 from MMF can be used at temperatures up to 250 °C (480 °F).

6. Cost: Vibration sensors come at different prices, so it’s important to choose one that fits within your budget, but also keep in mind that choosing a low-priced sensor may mean sacrificing quality or functionality.

To be continued part 2…