Principle overview：
The GJT-B series is a new generation of the metal detector.The circuit design adopts digital phase shifting technology, which has stable performance, high detection sensitivity and strong anti-interference ability. Mainly used in thermal power, cement, building materials, coking, mineral processing, paper making, forestry, environmental protection, food processing, vegetable freezing and other industries' belt conveyor processing.It uses the inductance signal when the metal into the sensor coil ,through the electronic technology to deal with and drive the actuator (electromagnet, conveyor tape motor switch, alarm bell) , thus eliminating the harmful metal.
Selection instructions：
Features: sensitivity debugging quantitative; high sensitivity design can detect huge metal and audible and visual alarm.
Detection range: iron, aluminum, stainless steel, manganese steel, steel ball, steel forging, hammerhead, shovel teeth, etc.
Timing function: delayed release 1-10 seconds after the relay actuation.
Control output:relay tip is normally open one pair, the other one pair closed .
Technical Parameters：
Project Parameter Model | Adaptive belt width mm | Power ≤W | Adaptive belt speed m/s | Supply voltage ~V | Sensitivity ≥mm | Overall dimension (mm) | |||||
| A | B | C | D | E | L | ||||||
| GJT-5 | 500 | 16 | 0.8-3 | 220±10% 50Hz | Φ20 iron, aluminum ball, manganese steel, steel forging | 850 | 690 | 380 | 570 | 250 | 740 |
| GJT-6.5 | 650 | 1000 | 840 | 380 | 570 | 250 | 890 | ||||
| GJT-8 | 800 | 1200 | 1010 | 380 | 570 | 250 | 1090 | ||||
| GJT-10 | 1000 | 1400 | 1240 | 380 | 570 | 250 | 1320 | ||||
| GJT-12 | 1200 | 1630 | 1470 | 430 | 620 | 300 | 1550 | ||||
| GJT-14 | 1400 | 1830 | 1680 | 430 | 620 | 300 | 1740 | ||||
| GJT-16 | 1600 | 2050 | 1890 | 480 | 670 | 300 | 1950 | ||||
| GJT-18 | 1800 | 2280 | 2120 | 480 | 670 | 300 | 2180 | ||||
| GJT-20 | 2000 | 2500 | 2340 | 500 | 690 | 300 | 2400 | ||||
