NORTHROP GRUMMAN Patara I User Manual page 28

© 2018 Cutting Edge Optronics, Inc.
Condensation Temperature


237 7 . ( T , RH

T


d
17 . 27 ( T , RH
T is the ambient air temperature in degrees Celsius (0 < T < 60)
RH is the relative humidity in percent (1% < RH < 100%)
T is the air condensation temperature
d
For example, suppose the chiller is running at 22 °C and the ambient air
temperature near the laser is 28 °C (82 °F). Referring to Figure 3-4 and Table 3-
4, find the intersection of the 28 °C air temperature and the curve for the 22 °C
diode temperature. At a relative humidity of 70% or greater, condensation will
form on the laser diodes.
Controlling the humidity level inside the laser is important to extend the lifetime
of the SHG crystal. The desiccant cartridge on the top cover can help to removes
excess moisture from inside the laser head.
WARNING.
Do not operate the laser without a functional desiccant cartridge.
Condensation on the diode arrays can seriously damage the laser and may void
warranty.
17


)
( T , RH )
237
)
where
16
Chapter 3: System Details

 
. 27 T RH

 
ln

 
7 . T 100
Patara I and II Laser User Manual