![background image](http://html1.mh-extra.com/html/mmf/vm25/vm25_instruction-manual_1813941027.webp)
6.10. Rotation Speed Measurement
The VM25 has an inbuilt RPM laser sensor for contactless measurements. This is lo-
cated in the lower part at the back of the instrument (Figure 34).
For taking rotation speed measurements the rotating part needs to be marked with a
piece of reflective film. Self-adhesive reflective film can be purchased from Sick
(
www.sick.com
), for example the material REF-PLUS.
Press the ◄ or ► key, until rotation speed and temperature are shown (Figure 35).
25
Figure 34: Rotation speed and temperature sensor, laser pointer
Figure 35: RPM and temperature display