Mine speed sensor

Mine speed sensor, speed sensor manufacturers mine, mine the speed sensor offer speed sensor, speed sensor security, mine belt slip sensor speed sensor is used in the belt conveyor, protection devices used to protect and prevent the belt slipping. Mine intrinsically safe speed sensor of a sensor, specifically for use in coal mine methane and other flammable having environment. Mine install the speed sensor on the frame with the belt, there is a magnet, the magnet is fixed to the end face of the belt driven wheel. The speed sensor is fixed to the frame. Mining Induction speed sensor is near the end of the magnet, when the belt running. Press the button on calibration. Mine works the speed sensor: the magnet fixed well after the magnet will be driven with wheel rotation, when the rotational speed sensor close to mine magnet, is proportional to the rotational speed of the magnetic component of the speed sensor and the driven wheel The positive pulse signal, each positive pulse trigger one-shot circuit, a certain width of positive pulse after the reverse, this time positive pulse being emitted pulse and magnetic components simultaneously enter another one-shot circuit. Speed ??is normal, this two-input one-shot pulse at the same time, after the transformation, "speed" side output high; if belt slippage, the driven wheel speed drops, a positive pulse magnetic sensing element will not be issued with the previous trigger pulse positive pulse synchronization, after a period of time delay so that the speed sensor "speed" ended output low, stall indicator light, the host performs relay release, cut off the belt conveyor control power, to achieve a low-speed protection, language also issued an alarm. Toggle switch can be changed by pulse width one-shot circuit, so that the speed can be adjusted from 1 to 3 rev / sec. Our company specializes in the production of various mine sensors, users are welcome to consult the discussion! We will be in the best service and the best price, wholeheartedly cooperate with you! Inquire 153 7650 ** 2836 ***! Contact: shiny landline: 0537-3151263 Phone: 15376502836 QQ; 1545087369 Want: yimei0010 Address: High-tech Zone, Jining City, Shandong Province Electrical and Mechanical Road