Dimensions, Mtbf, Mttr – Vaisala WM30 User Manual
Page 31: Sensor
Chapter 6 _______________________________________________Technical Data
VAISALA__________________________________________________________29
Dimensions
0212-228
Figure 13
Dimensions (in mm) of the Combined Wind
Sensor
MTBF
The calculated mean time between failure is 4.4
× 10
5
h for
permanent installations. The value equals to 2.27 when
expressed in a failure frequency during 10
6
hours of use.
MTTR
Mean time to repair is 0.2 h.