Is calibration really needed?
At some point, calibration will be needed. A MEMS accelerometer (as the one we are using) contains a mechanical spring element that has a specific stiffness. This stiffness is what is used as the base of the accelerometer to measure vibrations and shocks. As the spring is a mechanical object, the stiffness will over time be reduced depending on how much it is used.
When should the ReLog be calibrated?
This depends a bit on how much the accelerometer has been used. But, as a general rule we recommend that the ReLog is re-calibrated every second year to guarantee precise measurements.
If you haven’t calibrated the ReLog and would like to test it’s accuracy we suggest to place the ReLog on a shaker table and subject it to a 10 g peak at 100 Hz in all three axis and use a reference accelerometer and compare the result. If you find that the results are not consistent with each other the ReLog needs to be calibrated. If you have any questions around such actions you are more then welcome to reach out to us and we’ll answer any questions you may have. You can always reach us via our contact page.
Can ReVibe perform the calibration?
Yes, we can! We are currently structuring a calibration service where you can buy a calibration-subscription where we will help you ensure that your ReLog is up to date and calibrated once every second year.