Mtbf; Mttr; Table 6 Mtbf Values - Vaisala WAA151 User Manual

User's Guide ________________________________________________________

MTBF

MTTR

26 _____________________________________________________ M210293en-A
Property
Recommended
connector at cable end
Operating temperature
Storage temperature
Housing material
Cup material
Dimensions
Weight
1) Measured with cup wheel in position least favored by flow direction.
Optimum position yields < 0.35 m/s starting threshold.
2) Standard Deviation
According to the standard MIL-HDBK-217F calculated
mean times between failures are listed in Table 6 below.
Actually, the last column provides the failure frequency
6
during 10 hours of use.
Table 6 MTBF Values
Abbreviation
Gf
Gm
Nu
Mean time to repair is 0.3 h.
Description/Value
SOURIAU MS3116F10-6P
-50 ... +55 °C (with shaft heating)
-60 ... +70 °C
AlMgSi, gray anodized
PA, reinforced with carbon fiber
240 (h) × 90 (Ø) mm
Swept radius of cup wheel: 91 mm
570 g
Installation
Permanent installations
Mobile installations
Ship equipments
6
f/10 h
2.34
8.52
5.48