GJT-F series metal detector is designed for magnetic material belt conveying system in detection of metal and developed new models, the circuit design using the latest metal detection technology - digital phase shift and related detection technique, with stable and reliable performance, high sensitivity, strong material with inhibitory properties, excellent anti jamming ability. Can inhibit the material grade below 60% magnetic minerals produced by the" material effect". When the material of harmful metals by sensors, metal detector alarm, and gives control signals, through electronic technology for processing and driving an actuator ( electromagnet, a motor switch ) action, thereby discharging the harmful metal, or artificial picking except. Sensor for window type, one end of the detachable structure, without cutting the adhesive tape, convenient installation.