Meso Seismo
Support
My readings seem low.
Rest the phone directly on what you are measuring. A thick case, a cushion, or even a tablecloth damps the vibration before it reaches the sensor.
What is mm/s and why not g?
Vibration standards are written in velocity because it tracks the energy going into a machine's mountings. Acceleration exaggerates high frequencies, so the same reading in g can look alarming when nothing is wrong. You can switch units, but the severity bands only apply to mm/s.
Where do the severity bands come from?
ISO 20816 for small to medium machines: 0.71, 1.8 and 4.5 mm/s mark the boundaries between good, acceptable, tolerable and severe.
What is crest factor?
Peak divided by RMS. A smooth rotation sits near 1.4. Much higher means impacts — a loose part, a worn bearing — rather than steady running.
Is this a real vibration analyser?
No. It is a screening tool using a phone's motion sensor. It will tell you whether something changed or whether a reading is unusual; it will not replace calibrated equipment, and it cannot resolve above about 50 Hz.
Does the app track me?
No analytics, no accounts, no servers. Read the full privacy policy.
For anything else, email
bayjohannes@gmail.com
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