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Finnish Vaisala VAISALA HMP8 Temperature and Humidity Sensor
The Finnish Vaisala VAISALA HMP8 temperature and humidity sensor is designed for compressed air systems, refrigerated dryers, or other pressure proces
Product details
Finnish Vaisala VAISALA HMP8 Temperature and Humidity Sensor
Finnish Vaisala VAISALA HMP8Relative humidity and temperature probes for pressure and vacuum processes
The Vaisala HMP8 humidity and temperature probe is designed for use in compressed air systems, refrigerated dryers, or other pressure process applications that require easy insertion and removal of the probe, as well as easy adjustment of the insertion depth. Vaisala HMP8 is part of the Indigo host product line and is compatible with Indigo 200 series host devices and the free Vaisala Insight PC software.
Verified performance of Vaisala HUMICAP
Vaisala was the original innovator of thin-film capacitive humidity measurement technology and has now become the industry standard for humidity measurement.
Chemical cleaning can minimize the impact of pollutants to the greatest extent possible
In environments with high concentrations of chemicals and cleaning agents, chemical cleaning options help maintain measurement accuracy between calibration intervals.
Flexible Connection
This probe is plug and play, compatible with Vaisala Indigo host devices, and can be used as a standalone Modbus RTU probe or connected to Vaisala Insight PC software.
The installation depth of the probe can be adjusted freely, and a ball valve can be used to insert or remove the probe from the pressure pipeline
For the convenience of on-site calibration, equipment analysis, and functional configuration, the probe can be connected to the free Vaisala Insight PC software
The unique advantages of HUMICAP sensor technology
- Excellent long-term stability
- No condensation in extreme humidity
- Sensor heating allows for measurement even in condensing environments, with complete recovery of condensation
【 Featured advantages 】
- RH accuracy up to 0.8% RH, temperature accuracy up to 0.1 ° C (0.18 ° F)
- Temperature measurement range -70+ 180°C（-94 ... + 356°F）
- Water resistant and pressure resistant structure
- Sensor clearing chemical tolerance
- Modbus RTU based on RS-485
- Plug and play compatible with Vaisala Indigo series transmitters
- Traceable calibration certificate: humidity at 5 o'clock, temperature at 1 o'clock
- Standard delivery of sintered AISI316L filter
[Technical Data]
measured performance
relative humidity
| sensor | HUMICAP R2 Composite Sensor |
| measuring range | 0 100 %RH |
temperature
| sensor | Pt100 RTD Class F0.1 IEC 60751 |
| measuring range | -70 ... + 180 °C (-94 ...+356 °F) |
SI traceable calibration
| Uncertainty of relative humidity calibration (k=2) | ±0.5 %RH (0 ... 40 %RH) |
| ±0.8 %RH (40 ... 95 %RH) | |
| Uncertainty of temperature calibration (k=2) | +± 0.1 ° C (± 0.18 ° F) at 23 ° C (+73.4 ° F) |
work environment
| The working temperature range of the probe body | -40 ... + 80 °C (-40 ... +176 °F) |
| The working temperature range of the probe | -70 ... + 180 °C (-94 ...+356 °F) |
| IP rating | IP66 |
| electromagnetic compatibility | Compliant with EMC standard EN61326-1 Electromagnetic Compatibility Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use (Industrial Environment) |
| Working pressure | < 100 bar |
input and output
| working voltage | 15 ... 30 VDC |
| Current consumption | 10 mA (typical value) |
| 500 mA (maximum) | |
| Digital Output | RS-485， Non-Isolated |
| Analog Output | The current output and voltage output of Vaisala HMP8 are connected to the Indigo host output |
| Default Serial Settings | 19200 bps N 8 2 |
| agreement | Modbus RTU |
| Output parameters | Relative humidity, temperature, dew point temperature, wet bulb temperature, absolute humidity, mixing ratio, water content, water mass fraction, vapor pressure, enthalpy value |
Structure specifications
| Probe connection device | Including M22x1.5 and NPT1/2 "fittings |
| joint | M12/5 |
| weight | 530 grams (18.7 ounces) |
| probe | AISI316 |
| Probe body | AISI316 |
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