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1. (WO2015042960) METHOD AND SYSTEM FOR DETECTING DUST ACCUMULATION IN A HVAC FILTERING SYSTEM

Pub. No.:    WO/2015/042960    International Application No.:    PCT/CN2013/084728
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Oct 01 01:59:59 CEST 2013
IPC: B01D 35/143
B01D 46/18
F24F 13/28
Applicants: SCHNEIDER ELECTRIC IT CORPORATION
GALSIM, Marlon
APUHIN, Marlowe Dulaca
Inventors: GALSIM, Marlon
APUHIN, Marlowe Dulaca
Title: METHOD AND SYSTEM FOR DETECTING DUST ACCUMULATION IN A HVAC FILTERING SYSTEM
Abstract:
Disclosed herein are methods and systems for detecting the accumulation of dust in a filter of a HVAC system. In one example, there is provided a capacitive sensor system. The capacitive sensor system comprises a first conductive mesh(120), a second conductive mesh(130), a first filter media (110) disposed between the first conductive mesh(120) and the second conductive mesh(130), and a circuit configured to measure a capacitance of a first capacitive sensor formed by the first conductive mesh(120), second conductive mesh(130), and the first filter media(l 10).