
Compact Humidity and Temperature Probe HMP9
for rapidly changing environments
The Vaisala HUMICAP® Humidity and Temperature Probe HMP9 is designed for easy installation in rapidly changing environments where a fast response time, measurement performance, and chemical tolerance are essential. The compact size enables installation even in tight spaces, with the probe head only 5 mm (0.2 in) in diameter. For duct and chamber installations, a duct installation kit is available for the probe.
Indigo Family
The HMP9 complements the Indigo product family and is ideal for applications such as inlet monitoring in dryers, air handling units, data centers, and other humidity measurement applications with temperatures under 120 °C (248 °F) that don’t involve high pressure or long exposure to condensing conditions. The HMP9 is compatible with Indigo500, Indigo300, and Indigo200 series transmitters and Insight PC Software.

Key benefits
Miniature probe head
Minimized effects of contaminants
Flexible connectivity

Indigo Selector
Discover your ideal Indigo compatible probe and transmitter combinations with the Indigo Selector tool.