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OHWG214 Datasheet(PDF) 1 Page - Nanjing Ouzhuo Technology Co., Ltd. |
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OHWG214 Datasheet(HTML) 1 Page - Nanjing Ouzhuo Technology Co., Ltd. |
1 / 5 page OHW OHW OHW OHWG G G G Series Series Series Series Wiegand Wiegand Wiegand Wiegand sensor sensor sensor sensor Page 1 Nanjing Nanjing Nanjing Nanjing Ouzhuo Ouzhuo Ouzhuo Ouzhuo Technology Technology Technology Technology co., co., co., co., Ltd Ltd Ltd Ltd www.ohhall.com www.zbling.com Tel:86-25-52312738,86-25-83247886 FAX: 86-25-52312738 E-mail: ohhall@163.com General General General General Description Description Description Description OHWG series wiegand sensor is new-type magnetic sensor based on wiegand effect. It can convert the magnetic signal into voltage output without additional power supply, so it is also called zero power magnetic sensor. Wiegand sensor is composed of magnetic bistable function alloy wire made by special processing and induction coil winded outside. When an alternating magnetic field of proper strength is applied to the Wiegand wire, the magnetic field of the core switches polarity and then reverses, causing the Wiegand pulse to be generated.Magnetic switching occurs when the wire is in the presence or alternating longitudinal magnetic fields. The pulse amplitude is not totally dependent on excitation field strength and orientation.The alternating positive and negative magnetic fields of equal saturating strength are used to magnetize and trigger the Wiegand wire. These alternating magnetic fields are typically produced by magnets which are affixed to the rotating or moving equipment, by a stationary read head and moving Wiegand wires, or by an alternating current. This remarkable technology offers new capabilities in proximity sensing, tachometry, rotary shaft encoding, speed sensing, and many other applications. F F F Features eatures eatures eatures · No additional power supply during operating time · When trigger magnetic induction intensity is 2mT, the output voltage amplitude could reach 1V. When 8mT, the output voltage amplitude could be higher than 4V · Amplitude of output signal has nothing to do with the change rate of magnetic field, achieving “zero speed” sensing · No touching point, enduring erode, water-proof, explosion-proof and having a lifespan of 2 billion times · Achieving electrical signal long-distance transfer by using telephone line and coaxial line,etc. A A A Applications pplications pplications pplications Wiegand sensors are used in water, gas, and electric meters for electronic indexing. They also havemany automotive applications such as antilock braking, speed sensing, and position indicators. They have been used in anemometers and other wind speed applications, machine controls, shaft speed sensing, and numerous rotational counting applications. |
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