The GJT-2F metal detector is based on the original detector and has been continuously updated and improved to make its performance more reliable and more reasonable. GJT—2F series metal detector is suitable for various non-magnetic material belt conveying and processing systems in industrial and mining enterprises. It can accurately detect various metals such as iron, steel, manganese steel, chrome steel, aluminum and copper mixed in materials. Miscellaneous items, except the alarm indicator light flashes, the buzzer sounds, and the control circuit has a relay contact output that can be used with the iron remover to perform automatic iron removal. It can also directly stop the belt conveyor to manually remove iron to prevent metal from entering the raw material. The crushing system provides a reliable guarantee for the safe operation of the equipment. Compared with the previous models, the GJT-2F metal detector has the following improvements:
1. Applying the latest metal detection technology - digital phase shifting technology and related detection technology, and using a full set of imported integrated circuits and original devices, the performance of the whole machine is more stable, the printed circuit board adopts plug-in connection, standardization of spare parts, disassembly and assembly Easy to maintain.
2, high sensitivity design, and sensitivity debugging quantitative.
3. The control box can be installed on site or remotely into the control room. The latest circuit design can make the remote transmission distance reach 150 meters (this function can be selected according to user needs).
4, the latest sensor design, under the same stability and impact resistance conditions, the weight is 2 / 3 less than the previous sensor, making the site installation more convenient.
5, the use of a variety of anti-interference measures, the circuit itself produces noise and external interference have a strong ability to suppress, effectively prevent false alarms.
6. It has monitoring circuit and fault self-diagnosis function for maintenance and debugging, which is convenient for adjustment and repair.
Second, the working principle
This machine utilizes the metal signal generated by the metal when it enters the sensing electromagnetic field, processes it by electronic technology, and drives the actuator to eliminate harmful metals.
The latest research results of metal detection technology show that when the metal passes the sensing electromagnetic field, it not only causes the change of the electromagnetic field amplitude, but also causes the phase of the electromagnetic field to change. Moreover, the properties of the metal (magnetic, non-magnetic) cause changes in the amplitude and phase of the electromagnetic field. In the past, all types of detectors detected the amplitude change signal and ignored the phase change signal. The GJT-3E metal detector uses the latest metal detection technology - digital phase shifting and related detection technology to detect the amplitude and phase change signals generated by the metal entering the sensing electromagnetic field, thus obtaining the best detection of the metal. Sensitivity. Therefore, the detection sensitivity and anti-interference index of the machine are greatly improved compared with the previous models.
Third, technical indicators
The GJT-2F metal detector is designed according to the outdoor waterproof and dustproof structure. It conforms to the IP54 standard and works around the clock. The main technical indicators are as follows:
(1) Control box
Dimensions: 350mm × 300mm × 110mm
Weight: 9kg
Structure: outdoor wall-mounted waterproof and dustproof structure
Working style: working continuously around the clock
Output signal: relay contact output, one set of normally open, one set of normally closed
Contact capacity: 5A, 220VAC/28VDC
Timing function: The delay is released after the relay is closed, and the time is 1-10 seconds.
(2) Detection sensor
Structure form: flat type detachable structure
Applicable conveyor tape width: 500mm-2000mm
Applicable conveyor belt speed: 0.8-3.5 m / sec
(3) Comprehensive performance indicators
Power supply voltage: AC220V±10% 50HZ
Power consumption: ∠40W
Ambient temperature: -200C-+500C
Relative humidity: 85% RH
The angle between the sensor installation plane and the horizontal plane is ≤18 degrees
The maximum distance between the sensor and the control box is ∠150 meters.
Easy Electronic Technology Co.,Ltd , https://www.pcelectronicgroup.com