Now available through Powell Electronics are the GAPS (General Aerospace Proximity Sensors) and HAPS (Harsh Application Proximity Sensors) proximity sensors from Honeywell. Both sensor series incorporate Honeywell’s patented integrated health monitoring functionality; however, the products have some technical differences that allow them to be used in various aerospace applications. The GAPS series are configurable, non-contact, hermetically sealed devices designed to sense the presence or absence of a target. They can be used in less harsh areas of application with some differences of electrical and environmental characteristics when compared to HAPS. HAPS Aerospace Proximity Sensors are configurable, non-contact, hermetically sealed devices designed to sense the presence or absence of a target in harsh duty aircraft applications.
The GAPS and HAPS series proximity sensors provide on/off outputs and can be configured with an optional health monitoring output to the host system. The sensing mechanism is based on the familiar Eddy Current Killed Oscillator (ECKO) principles. However, Honeywell
has also designed and implemented the patented FAVCO (Fixed Amplitude Variable Current Oscillator) technology, which enables the Honeywell sensors to have the health monitoring (IHM) features. In addition, both GAPS and HAPS series help to reduce downtime and maintenance costs due to a unique circuit that can detect any internal failures and display a fault output instead of a false positive or false negative.
Technical details of the GAPS and HAPS series proximity sensors include a very wide operating temperature range of -55°C up to +115°C, a vibration resistance of up to 20 G (GAPS series) and up to 90 G (HAPS series), a supply voltage of 12 V DC up to 32 V DC and a target response time of < 5 milliseconds.
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