


Vaisala HMP3 RH&T Probe
The Vaisala HMP3 is a multipurpose RH&T probe that may be used with transmitters from the Indigo 200 series for common laboratory applications and the Indigo 500 series for more demanding, industrial installations. The probe head houses the electronics and calibration. For duct installations, for instance, the sensor-equipped probe is attached to a cable (a duct mounting kit is also available).
The Vaisala HMP3 can be utilized as a standalone digital Modbus RTU transmitter via RS-485 serial bus in addition to indigo interaction. Vaisala Insight PC Software, which enables data visualization and calibration, can be used to setup it. As standard, Vaisala HMP3 probes include a manufacturer calibration certificate.

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- Specifications
- Features
- Downloads
Relative Humidity | Range : 0¦100%RH |
Relative Humidity | RH uncertainty within +/-0.8%RH (at 50%RH, 23°C) |
Temperature Range | -40¦+120°C |
Temperature | Temp uncertainty within +/-0.1°C (at 50%RH, 23°C) |
Vaisala HMP3 RH&T Probe Specifications
- RH uncertainty within ±0.8%RH (at 50%RH, 23°C)
- Temp uncertainty within ±0.1°C (at 50%RH, 23°C)
- RH measurement range 0…100%RH
- Temperature measurement range -40…+120°C
- Vaisala HUMICAP® Sensor Technology
- Typically used for For air, nitrogen, hydrogen, argon, helium, and oxygen (contact Fluidic for other gas compatibility)
- Various sensor protection filter types
- Ideally used with Indigo 500 or Indigo 200 Transmitters
- Can act as a stand alone instrument with Modbus output
- Remote probe design
- duct mounting kit available (model 210697)
- Compatible with radiation shield DTR502B for weather monitoring applications)
- 316SS probe and head, IP66 weather proof design
- Factory calibration certificate included as standard 6 point RH, 1 point temperature)
- Fluidic offer ongoing calibration (please contact either office for details)
- Various calculated output options (absolute humidity, dew point, enthalpy etc, see datasheet)
- Configurable with Vaisala Insight software and Vaisala USB2 cable
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