Speed ??Monitor SJK-1, slip speed detector [Macheng Schmersal] for conveyors linear detection of the new device, real-time detection of belt speed. Has been widely used in the tape transport system for the belt conveyor security operation to provide a reliable means of detection. In the power plant and mine site operating the conveyor system has been widely used. Speed ??monitor with the "self-identification normal speed," the intelligence, is really due to overspeed switch, in the domestic leading level. When the device is abnormal, speed is less than two-thirds the normal speed, output "abnormal slow turn" signal. Timely feedback for the functioning of the computer equipment; also be directly used for equipment protection. SJK-1 Speed ??monitor technical indicators: 1, detection mode: non-contact; 2, to adapt with speed detection: 0∽9.99 m / s; 3, can detect the speed of the slip rate: 0∽100%; 4, velocity measurement error : <0.1 m / s; 5. Relay Operation life: 10 million times; 6, contact capacity: AC220V 3A; 7, the power supply voltage: AC220V 50Hz; 8, the use of ambient temperature: -25 ° + 65 ℃ 9, speed display Range: 0∽9.99 m / s; works when the disc is rotated with the running tape, magnetic induction sensor signal input to the control circuit to go, after amplification, shaping counts. Compared with the count value preset number, determine the belt conveyor belt speed, namely: normal speed, skid or speeding. Meanwhile, the implementation of the circuit outputs a corresponding switching signal. When the touch wheel is rotated with the tape machine running inside the disk drive pulse, changes in magnetic induction signal pulse caused by disc rotation speed sensor input to the control circuit, the circuit amplification, comparison, after shaping counted. Compared with the count value preset number, determine tape belt speed, while performing circuit outputs a corresponding switching signal. Both: Executive circuit outputs a corresponding switching signal reaches below the slip speed with the computer shut down. This switch is used to adjust the speed value of the machine conveyor belt is running and active drum slipping (stall) fault. Prevented serious accidents due to slippage caused by the occurrence. The unit can also be used for multiple conveyor chain start and stop, low speed brake or fried protection, so that simplify site operations and improve safety. In the iron and steel, electricity, coal, and ports and other belt conveyor industry it has been widely used.