Vaisala HMPXPROBE3 HMP3 Relative Humidity and Temperature Probe for General Purpose Applications with Exchangeable Sensor with 2m Cable

HUMICAP® Humidity and Temperature Probe HMP3 is a general-purpose probe designed for processes with moderate humidity and temperature levels. The probe structure allows the sensor to be replaced in the field without tools, making it suitable for applications such as industrial HVAC systems, paint booths, cleanrooms, environmental chambers, and applications where periodic recalibration is not sufficient for maintenance.

Features:

• RH accuracy up to 0.8 %RH and temperature accuracy up to 0.1 °C (0.18 °F)
• Temperature measurement range -40 ... +120 °C (-40 ... +248 °F)
• Compatible with Indigo series transmitters
• PPS plastic grid filter with stainless steel mesh delivered as standard
• Modbus RTU over RS-485 for flexible connectivity
• Includes traceable calibration certificate

Designed for field maintenance

Probe design allows for several operating environments and flexible field maintenance. Filter and HUMICAP® R2 sensor element are field replaceable for applications that require frequent replacements. Calibration and adjustment of humidity measurement is also needed if the HUMICAP® R2 sensor is replaced.

The following filter types are recommended for HMP3:

• Stainless steel mesh filter (12 µm mesh size) for typical applications such as air handling units
• Sintered stainless steel filter for applications where maximal protection from dust ingress is essential
• PPS plastic grid filter for best humidity response time

Sensor purge available with composite sensors

If purchased with a composite sensor instead of the field-replaceable HUMICAP® R2 sensor, HMP3 can use the sensor purge feature. In environments with high concentrations of chemicals and cleaning agents, sensor purge helps to maintain measurement accuracy between calibration intervals. Sensor purge involves heating the sensor to remove harmful chemicals. The function can be initiated manually or programmed to occur at set intervals.

Flexible connectivity

The probe can be used as a standalone digital Modbus RTU transmitter over an RS-485 serial bus, and it can also be connected to Indigo transmitters and the Indigo80 handheld indicator. For easyto-use access to field calibration, device analytics, and configuration functionality, the probe can be connected to Vaisala Insight software for Windows®.

Vaisala Indigo product family

Indigo transmitters extend the capabilities of Indigo-compatible measurement probes. The transmitters can display measurements on the spot as well as transmit them to automation systems through analog signals, digital outputs, and relays. The Indigo80 handheld indicator is ideal for spot-checking and process monitoring, as well as for configuring, troubleshooting, calibrating, and adjusting the probe

For more information, please see Data Sheet