European Facility For Airborne Research

European Facility For Airborne Research May 23, 2018, 03:06

Instrument: Water Vapour Sensing System

Name Water Vapour Sensing System
Acronym WVSS-II
Manufacturer SpectraSensors Inc.
Manufacturer website http://www.spectrasensors.com/wvss/
Operated by METOFFICE
Operated onboard

Instrument type

Name Non dew/frost point hygrometer
Acronym Other hygrometer

Principle of operation

Measured parameter Water Vapour, Relative Humidity
Operating principle

The MOZAIC-Humidity Device (MHD) is a special airborne humidity sensing device (AD-FS2), developed by Aerodata (Braunschweig, Germany) and based on the humidity and temperature transmitter HMP230 of Vaisala (Helsinkin, Finnland). The sensing element itself is a combination of a capacitive relative humidity sensor (Humicap-H, Vaisala) and a Pt100 temperature sensor which has been installed in a Rosemount housing mounted on the outside skin of the aircraft in the vicinity of the nose cone.

Measurement(s) Thermodynamics

Dimension and weight

External dimension Internally-mounted sensor unit 254.00mm (10.00”) long x 138.18mm (5.44”) wide x 92.08mm (3.625”) high.
Weight 3.46

Performance

Operating mode In situ
Range

Resolution

Sensitivity

Accuracy

Bandwidth

Modifications

Operational restriction

approximately 0-45,000ft altitude

+50 to -65C external temperature

Operational requirements

5 amp maximum @ 28 VDC

Certification approvals

Certified for window-blank installation on FAAM aircraft

Additional information

Access, host and processing

Access

Optional instrument fit on the FAAM aircraft

Could also fit on any aircraft having the following characteristics

General description

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This project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 312609

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