Apparatus for detecting ferromagnetic objects and screening people and equipment

摘要: Apparatus for detecting a ferromagnetic object located on or in person being screened comprises first magnetic sensor which use measures an ambient field gradient within volume of space and produces corresponding measurement signal, primary power supply provides to the sensor, signal processing circuit arranged communication with sensors configured identify temporal variations from identified provide output indicative presence space, warning device operable by vicinity apparatus at least one audible visible response circuit. The include user input means enables be disabled without powering down sensors.