European Facility For Airborne Research

European Facility For Airborne Research May 17, 2022, 07:20

Instrument: INTA 2D Cloud Particle Imaging Probe

Name INTA 2D Cloud Particle Imaging Probe
Acronym PMS-2D2C-INTA
Manufacturer Particle Measuring Systems
Operated by INTA
Operated onboard

Instrument type

Name Optical Array Probe (OAP)
Acronym Optical Array Probe

Principle of operation

Measured parameter Particle shadow area/diameter
Operating principle

Optical array probe. Cloud particle enters field of view passing through a laser beam. Particle shadow falls on a collecting optical array (normally a photodiode array). This is sampled at a rate such that the pixel resolution in time is the same as that in the across-array dimension. This forms a digitized shadow image of the particle.
From this size and shape are determined, and bulk parameters such as concentration and size spectra derived. Empirical relationships are used to calculate the mass of irregular particles (and hence the ice water content).

Measurement(s) Clouds & Precipitation

Dimension and weight

External dimension Cylinder: 30 in. L * 7 in. D Optical Extensions (2): 19 in. L * in. D
Weight 20.0


Operating mode In situ






Operational restriction

Enviromental: Temperature (-60ºC to +50ºC)
Humidity:0% to 100% non-condensing
Maximum Altitude: 0 to 60.000 feet MSL

Operational requirements

Probe Main Power: 115 VAC 50-400 Hz, 1A (230 VAC Optional)
Probe De-Ice Power: 28V, 110W, 115V 18W or 70W (Optional), (230 V 70W Optional)

Certification approvals

Additional information

Access, host and processing


Consult INTA

Could also fit on any aircraft having the following characteristics

General description

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