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Intellisense® Wet and Dry Bulb Psychrometer (Hygrometer)

The Intellisense® Hygrometer is specifically designed to meet the requirements of the WMO CIMO guide, in line with the Minamata Convention Global Treaty on the phase-out of mercury by 2020.

Our Intellisense® Hygrometer is the “direct replacement” for manual hygrometers, often within a Manual Meteorological Garden.

Its technical capabilities are better than mercury, with datalogging, GPRS and expansion into an AWS with a multiplicity of different sensors for most ground data parameters.

If you, your organisation or your NHMS needs to transition away from mercury-filled instruments in the field, then the Intellisense® Kit is the perfect option.

(Stevenson Screen – Not Included) product code: FM 6300

Product Details

System Description

Module consisting of Data Processing, Display and control unit, 2 x PT100 Temperature sensors (1 x wet bulb & 1 x dry bulb) with water reservoir and pack of 50 wicks – all intended to be housed in existing Stevenson’s Screen. Displays at site Air Temperature, Relative Humidity, Max/Min Temperature in Period.

  1. Sensors type : PT100 Class A

  2. In the field calibration – 70cm cable length to allow periodic on-site calibration with users Calibration Standard such as a Dry Block Calibrator.

  3. Up to 5 factory adjusted settings over chosen temperature range allowing accuracy of better than 0.1 degree C over the Range -20 to 50+ degrees C.

  4. Supplied with UKAS traceable calibration certificate – calibrated at -20, 0, 15, 30, 45 degrees C

  5. Data Processing to produce Relative Humidity from Wet and Dry bulb readings and soil temperature readings accessed via the digital display on the Hygrometer module.

  6. Data Log to memory for download via RS232/USB port.

  7. 4 line Digital Display with 2 button control – “Menu” and “Select”

  8. Single to Multiple Units via CANBUS interconnection allowing system expansion for measuring other Meteorological parameters such as Barometric pressure, Wind speed and direction, Rain fall, Solar radiation etc.

  9. Serial Connection to any unit via Intellisense Hygrometer module

  10. Auxiliary Serial connection available for Telemetry upgrade (GPRS etc).

  11. Ability to communicate transparently to a PC GUI which archives and display data sets.

Technical Specification for the Sensors

Temperature Measurement

  • Range: -20 to 50+ Degree C or Better

  • Resolution: 0.01

  • Accuracy: ±0.1 degree C or Better

  • Sensor Type: PT100

Power Requirement

  • Power source : Sealed lead acid battery and solar charging system

Memory Requirement

  • At least 12 months of hourly data records

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