GJT-1F-B magnetic material belt metal detector suitable for magnetic materials, such as black, non-ferrous metal mining GJT-2F metal detector GJT-2F-type metal detector is based on the original probe, through constantly updated design, its performance is more reliable, more reasonable. GJT-2F series metal detector is suitable for industrial and mining enterprises in a variety of non-magnetic material belt conveyor and processing system that can accurately detect the mixed materials in a variety of metallic iron, steel, manganese steel, chrome steel, aluminum, copper, etc. debris, in addition to the alarm LED flashes, the buzzer sounds, the control circuit has a relay contact output with Separators supporting the use of automatic removal of iron, but also directly benefit the parking artificial iron belt, to prevent the metal into raw material broken system, the protection of the safe operation of equipment to provide a reliable guarantee. GJT-2F-type metal detector compared with the previous models, the following improvements: 1, the application of the latest metal detector technology - digital phase detection technology and related technology, and fully equipped with imported IC and the original device, so that the whole more stable performance, a printed circuit board using the plug-in connector, spare parts standardization, easy disassembly and maintenance. 2, high sensitivity design, debug and quantitative sensitivity. 3, the control box either on-site installation, or you can remote into the control room, the latest circuit design allows remote distance of 150 meters (This function can be selected according to the user). 4, the latest sensor design, so that in the same conditions of stability and impact resistance, weight than in the past to reduce the 2/3 sensor, make on-site installation more convenient. 5, using a variety of anti-jamming measures, noise, and outside of the circuit itself produced by various disturbances have a strong immunity, effectively preventing false alarms. 6, has for the maintenance, monitoring and fault circuit debugging with self-diagnostic function, easy to adjust and repair. Second, the principle of this machine is to use a metal metallic signal when entering the sensor electromagnetic field generated by electronic technology for the processing, and drives the actuator movement, which remove harmful metals. The latest research shows that the metal detection technology, metal through the electromagnetic field sensor, not only lead to changes in the amplitude of the electromagnetic field, while also causing electromagnetic phase change. Moreover, the properties of different metals (magnetic, non-magnetic) cause changes in amplitude and phase of the electromagnetic field is not the same. All previous models of the detector is to detect changes in the signal amplitude, while ignoring the phase change signal. GJT-3E-type metal detector metal detector using the latest technology - digital phase shift and correlation detection technology, changes in signal amplitude and phase of the metal into the sensor electromagnetic field generated are to be detected, resulting in optimal detection of this metal sensitivity. Thus the detection sensitivity and anti-jamming aircraft index has greatly improved over previous models. Third, technical indicators GJT-2F-type metal detector machine by outdoor waterproof, dustproof structure designed to meet IP54 standards, work around the clock. The main technical indicators are as follows: (1) Control Box Dimensions: 350mm × 300mm × 110mm Weight: 9kg formal structure: Outdoor wall-mounted waterproof, dustproof construction work: continuous work around the clock output signal: relay contact output, a group of normally open, a normally closed contact capacity: 5A, 220VAC / 28VDC timer function: Relay pull delay after the release of 1-10 seconds. (2) detection sensor structure forms: flat-type removable structure is suitable conveyor belt width: 500mm-2000mm suitable conveyor belt speed: 0.8-3.5 m / s (3) comprehensive performance indicators Supply voltage: AC220V ± 10% 50HZ Power consumption: ∠ 40W Ambient temperature: -200C- + 500C Relative Humidity: 85% RH sensor mounting surface and the horizontal angle ≤18 maximum distance between the sensor and the control box ∠150 meters.