Siemens Lens AGG03

This sensor component is a lens made by Siemens. It is used in HVAC systems and engineering automation as part of optical sensing equipment. The lens is resistant to temperature effects. Its catalogue reference is AGG03.

Lenses of this type are selected by comparing the outer diameter, thickness, and mounting arrangement (clip or threaded) with the existing scanner. The optical material must suit the detector wavelength: quartz for ultraviolet scanners, glass for infrared. The focal distance relative to the scanner housing also has to match. Before ordering, measure the old lens and note the detector model.

A damaged or dirty lens can make the scanner lose the flame signal, and the burner control may lock out. Dirt, cracks, or coating changes attenuate the radiation. Check the lens surface for contamination and damage; clean it with a lint-free cloth approved for optical surfaces, handling it by the edges.