European Facility For Airborne Research

European Facility For Airborne Research July 25, 2024, 02:24

Instrument: Metair modified LI-7500

Name Metair modified LI-7500
Acronym Licor7500-Metair
Manufacturer LI-COR
Manufacturer website
Operated by METAIR
Operated onboard

Instrument type

Name CO2 and H20 by InfraRed absorption
Acronym CO2 and H20 by IR absorption

Principle of operation

Measured parameter CO2, H2O
Operating principle

Measurement(s) Gas Phase

Dimension and weight

External dimension sensor head 30 cm long, 7 cm diameter; electronic housing 25 x 25 x 4 cm
Weight 0.0


Operating mode In situ






Mounting in a flow-parallel perforated tube in order to achieve a well defined homogeneous density distribution, measured by p and T. Active flushing of the sensor head with clean gas instead of using the internal scrubbers which are too slow to cope with leaking observed during descents after high-altitude operation.

Operational restriction

suitable for slow aircraft (<60 m/s) only.

Operational requirements

28 VDC, a few Watts.

Certification approvals

NO, only for DIMO underwing pod and MetAir operation.

Additional information

Access, host and processing


YES, in principle, also consulting on how and why to make the modifications.

Could also fit on any aircraft having the following characteristics

General description

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