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Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001

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12.4 PROXIMITY DETECTION

· At times we want to know when a physical object is present. This may be a non-contact detection.

12.4.1 Optical (Photoelectric) Sensors

12.4.2 Capacitive Sensors

12.4.3 Inductive Sensors

12.4.4 Ultrasonic

12.4.5 Hall Effect

12.4.6 Fluid Flow

12.4.7 Other Types