European Facility For Airborne Research

European Facility For Airborne Research May 17, 2022, 07:19

Instrument: Enviscope modified Vaisala/Rosemount HMP

Name Enviscope modified Vaisala/Rosemount HMP
Acronym HMP-Enviscope
Manufacturer Enviscope
Operated by Enviscope
Operated onboard

Instrument type

Name Dew/Frost-point hygrometer
Acronym Dew/Frost-point hygrometer

Principle of operation

Measured parameter Dew Point
Operating principle

Thermoelectric Chilled Mirror Hygrometer
Operating principle information should be extended to explain servo-control of mirror temperature and detection of condensation deposit.
Note possible ambiguity between dew and frost-point temperatures for low mirror temperatures.
Operating principle is extended to include cryogenic cooling in addition to thermoelectric.
manual hygrometers

Measurement(s) Thermodynamics

Dimension and weight

External dimension
Weight 0.0


Operating mode In situ






Operational restriction

Operational requirements

Certification approvals

Additional information

Relative humidity is measured by means of a capacitive sensor (Vaisala HumiCap-H) and a PT-100 temperature sensor. Both of them are integrated in a modified Rosemount housing or a "Reverse Inlet".

Access, host and processing


Could also fit on any aircraft having the following characteristics

General description

Title Author Type Related
No documents.
Back to top
Copyright © 2022 EUFAR All rights reserved.