HMP155 probe provides reliable humidity and temperature measurement. It is designed specifically for demanding outdoor applications and has Vaisala’s proven HUMICAP®180R sensor which offers excellent stability and high performance even in harsh environments.

Vaisala HUMICAP®180R sensor – superior long-term stability
Optional warmed humidity probe and chemical purge
USB-connection cable for service use
Fits in DTR13 and DTR502/503 radiation shields and also in the Stevenson screen
Weather-proof housing IP66
Optional fast temperature probe
Different output possibilities: voltage, RS-485, resistive Pt100
Applications: meteorology, aviation and road weather, instrumentation


Long-term stability and easy maintenance
The probe can be calibrated using a PC with a USB cable, with push buttons, or with the MI70 indicator.
Protected from default with a sintered teflon filter, the HMP155 has the maximum build-in protection against liquid water, dust, and dirt.
Warmed probe
The sensor head is warmed continuously to keep the humidity level inside it below the ambient level, which reduces the risk of condensation forming on the probe.