April 08, 2004

Velocity Probe Specifications

I've recently been assigned an area of responsibility concerning vibration monitoring of rotating equipment. We used velocity probes (Wilcoxson 973v). As I review our collection specifications (Entek - Emonitor/Enshare) I noticed that the vendor specifies 100mV/ips whereas the collection specification calls out 100mV/g. This doesn't seem consistent or correct to me, but I'm told it makes no difference either way???? Additionally, manufacturer accuracy specification is +- 10% yet when I review the calibration acceptance criteria it states +- 3dB from reference. Again this doesn't seem to be consistent.

Can you provide some insight?

Posted by maintenance-tips at April 8, 2004 12:55 PM