The Vaisala HMP155 relative humidity probe is designed for harsh outdoor environments and applications where the highest accuracy relative humidity monitoring is demanded.

By utilising a membrane filter, fast response times make this sensor ideal for environments where the relative humidity is constantly changing and needs to be monitored accurately.

Features at a Glance

• Fast response time
• Excellent long term stability
• Field replaceable sensing tip
• Solid construction
• Weatherproof Polycarbonate housing

• Relative Humidity

• Meteorology
• Scientific Research

• Weather Maestro

The sensor’s Teflon filter provides protection from dust, dirt and water and provides long term stability. The sensor is optionally able to be continuously heated enabling the probe to provide reliable and accurate data even in high humidity environments, therefore, reducing the chances of condensation developing on the sensor.

For accurate measurements we recommend placing the sensor inside a sensor shelter to protect it from direct sunlight and rain.

Recommended for applications where the best quality relative humidity sensing absolutely has to be recorded.