EFRC (the European Forum for Reciprocating Compressors) has within their guidelines, defined criterias for vibration assessment of reciprocating compressors.
Measurements of vibrations at the main parts of the compressor individually may only give a rough indication of the stress levels. In order to enable a more holistic and reliable vibration assessment of the compressor, you have to consider how the parts affect each other.
The calculator below is a fast way to get a quick reference to such an assessment.
Input values for the most prominent peaks from the vibration velocity RMS spectrum: