C.1 specifications – Campbell Scientific 43347 RTD Temperature Probe and 43502 Aspirated Radiation Shield User Manual
Page 32

Appendix C. 43347 Aspirated Radiation Shield
The 43408 radiation shield employs concentric downward facing intake tubes
and a small canopy shade to isolate the temperature probe from direct and
indirect radiation. The 43347 temperature probe mounts vertically in the center
of the intake tubes.
A brushless 12 Vdc blower motor pulls ambient air into the shield and across
the temperature probe to reduce radiation errors. The blower operates off a 115
Vac/12 Vdc transformer that is included with the shield.
C.1 Specifications
43408 ASPIRATED RADIATION SHIELD:
DIMENSIONS:
Length: 44 in, extendable to 75 in
Diameter of Blower Housing: 6 in
AIR FLOW RATE:
3 to 7 m/s depending on sensor size
TEMPERATURE RANGE: ±50°C
POWER REQUIRED:
12 to 14 Vac @ 420 to 480 mA
115 Vac/12 Vdc - 800 mA transformer supplied
RADIATION ERROR:
< 0.2°C radiation @ 1100 W/m
2
irradiance
LIFE EXPECTANCY ON BLOWER:
80,000 hrs @ 25°C
43347 Temperature Probe
and Junction Box
Blower Housing
43408 Aspirated
Radiation Shield
FIGURE C-1. 43347 RTD Temperature Probe and 43408 Aspirated
Radiation Shield
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