Gas Technology Institute
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Accelerated Testing of Flame Ionization Sensor...

SKU: GRI-98/0179
Accelerated Testing of Flame Ionization Sensor Contamination in Residential Furnaces: Phase I

One to two percent of residential furnaces require warranty repairs due to low flame ionization current causing system lockout even though a flame is present. The cause of the reduced flame ionization detector (FID) current output was traced to deposition of an insulating silicon oxide compound onto the flame sensor rod and burner surfaces.
Document Type
Report
Report Type
Final Report
Report Period
08/97 - 04/98
Corporate Source
Battelle Memorial Institute, Columbus, OH; Arthur D. Little, Inc., Cambridge, MA
Sponsor
Gas Research Institute, Chicago, IL
Pagination
37p
Product Media
PDF Download
$295.00 / Each
 
Availability: In Stock
Summary:
One to two percent of residential furnaces require warranty repairs due to low flame ionization current causing system lockout even though a flame is present. The cause of the reduced flame ionization detector (FID) current output was traced to deposition of an insulating silicon oxide compound onto the flame sensor rod and burner surfaces. The significant costs, the nuisance to home owners, and the damage to manufacturer's reputation necessitated an assessment of the causes of FID failures, which led to the identification of the need for a standardized accelerated test for evaluation of potential solutions to the FID coating problem and a better understanding of the environmental and design parameters which influence the rate of formation of the passivating film on the FID surface. This report describes the development of a simple accelerated life test for realistic sensor failures and its validation through preliminary tests on a single furnace. Also included (as an appendix) is an instruction manual describing the test rig and organosilicone introduction system as well as the test data acquisition and system control software installation and operation.
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