This product is no longer available and has been replaced by: EE181-L. Some accessories, replacement parts, or services may still be available.
HMP45C-LQ Temperature and Relative Humidity Probe

Other Accessories

A 41003-5 solar radiation shield is required if the probe is exposed to direct sunlight; it mounts to a tripod or tower mast, crossarm, or user-supplied pole.
The RAD14 uses a double-louvered design that offers improved sensor protection from driving rain, snow, and insect intrusion. It also has lower self-heating in bright sunlight combined with higher temperatures (> 24°C (~75°F)) and low wind speeds (< 2m/s (~4.5 mph)), providing a better measurement.


Order the 27727 to have Campbell Scientific recalibrate a temperature and RH probe. The accuracy of the recalibration is ± 2% from 10 to 90% RH and ± 3% from 90 to 100% RH. Campbell Scientific supplies before and after calibration sheets.