Campbell Scientific will soon offer Vaisala’s HMP155 Temperature and Relative Humidity (RH) Probe. This new probe will eventually replace the HMP45C. Improvements over the HMP45C include a wider operating-temperature range, more-accurate RH measurements, more-accurate temperature measurements, a wider temperature-measurement range, and lower power consumption. The HMP155 is longer than the HMP45C, and uses the 41005-5 14-plate Gill Radiation Shield.

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