Figure 1 — Model 9732-STEEL aviation ice detector is a commercial, off-the-shelf , in-flight ice sensor that monitors the optical characteristics of whatever substance is in contact with the probe, either air (NO ICE) or water ice (ICE alert). Reports rate-of-ice-accumulation in three stages. Acrylic housing is size and shape of a hockey puck. * Probe is type 316-L marine grade stainless steel for subsonic flight. See fig 2.

Ice*Meister™ Model 9732-STEEL detects ICE on any aircraft. It is demonstrably the smallest, lightest, most sensitive ice sensor aloft today. Model 9732 is entirely optical, has no MHz clock, no moving parts. See figure 2. When ice forms, it forms directly on the probe’s optical surfaces. Model 9732 is completely sealed and potted solid with 2-part epoxy; no exposed electronics.

NOTE: Photos subsequent to figure 2 may differ slightly from Model 9732-STEEL.

Because of its slender cross-sectional area, ice forms on probe earlier than on large-area airframe members, such as windshields, wing leading edges, tailplane leading edges, wheels, struts, etc.

The complete unitized system consists of a stainless steel ice sensor probe, a circuit board potted into the housing, and a lightweight blue cable that connects the sensor to the host system. Installation is accomplished by means of two #6-32 stainless steel screws through the body of the sensor, and the probe’s 5/16”-24 thread and hex nut. See figure 2 a, b.