American Association for Aerosol Research - Abstract Submission

AAAR 36th Annual Conference
October 16 - October 20, 2017
Raleigh Convention Center
Raleigh, North Carolina, USA

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A Wick Moisture Sensor for Next Generation Water Condensation Particle Counters

GREGORY LEWIS, Steven Spielman, Susanne Hering, Aerosol Dynamics Inc.

     Abstract Number: 633
     Working Group: Instrumentation and Methods

Abstract
Maintaining wet walls in a water condensation particle counter is key to its performance. Yet to date this is not directly monitored. Reported here is a wick moisture sensor to provide a direct, real time reading of the wick status. This sensor shows deviation from a fully wetted state well in advance of the loss of instrument performance. Coupled with an algorithm to control the temperature of the water-recovery stage, this provides a direct means to ensure long-term, stable operation.