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Additive Manufacturing-Enabled Low-Cost Particle Detector

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Active laser cavity particle counters: a fundamental problem and solution for airborne application.

J M Rosen¹, N T Kjome

¹Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071, USA. wyojim@igc.apc.org.

|March 8, 2008

Summary

An air-density effect impacts aerosol particle counter calibration. A new device corrects this detuning, improving instrument accuracy during airborne field tests.

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Area of Science:

Atmospheric Science
Instrumental Science
Aerosol Science

Background:

Active cavity aerosol optical particle counters are widely used for atmospheric measurements.
Instrument performance can be affected by environmental factors such as air density.

Purpose of the Study:

To describe a previously unreported air-density-related detuning effect in active cavity aerosol optical particle counters.
To present a simple device for correcting this detuning effect.
To evaluate the effectiveness of the correction device in airborne field tests.

Main Methods:

Description of the air-density-related detuning effect.
Development and implementation of a correction device.
Airborne field tests comparing measurements with and without the correction device.

Main Results:

A novel air-density-related detuning effect was identified in active cavity aerosol optical particle counters.
The developed correction device effectively mitigated the detuning effect.
Airborne tests demonstrated significant improvement in instrument performance after applying the correction.

Conclusions:

The air-density effect significantly impacts the calibration of aerosol optical particle counters.
The presented correction device offers a practical solution to improve instrument accuracy.
Accurate aerosol measurements are crucial for understanding atmospheric processes and climate change.