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Modelo: NJK-5002C
Tensión de alimentación: 5-30 V CC.
Distancia de detección: 10 mm (distancia de detección efectiva 0-10 mm).
Corriente de carga: 150 mA (no más de
Forma de salida NPN de tres líneas.
Estado de salida normalmente abierto (NO)
Detecta objetos de material metálico.
Material del producto: piezas de metal: componentes de plástico de cobre: PBT.
Cables externos de 4 pies (estándar, otros según los requisitos del cliente).
Indicador de salida LED (rojo)
Diámetro del factor 12 mm; longitud de la rosca: 12 mm; longitud total: 37 mm.
El paquete incluye:
2 interruptores de proximidad NJK-5002C con sensor de efecto Hall, NPN, 3 cables normalmente abiertos.
Paul W.
Comentado en los Estados Unidos el 10 de mayo de 2024
These hall sensors perform as well as sensors costing much more.
William
Comentado en los Estados Unidos el 27 de noviembre de 2023
It requires a magnetic field to change state. If a magnetic field is not involved -- NO WORKY PEOPLE! Magnets work well!
my3sons
Comentado en los Estados Unidos el 1 de agosto de 2022
Hall effect should trigger in with the proximity of any metal, it does not. It requires a magnet in the proper orientation to operate. Magnet is included. Operates like a reed switch. It also does not trigger at 10mm with the included magnet, its is more like 2mm.
Claire008
Comentado en los Estados Unidos el 4 de octubre de 2021
I'm currently using one of these to sense the state of my overhead garage door. It is behaving and functioning as a Hall Effect Proximity Sensor should. Each one comes with a small magnet for activation. I found a location where I could mount the sensor on a bracket the holds the garage door tracks. I just needed to enlarge a hole a bit to hold the sensor. I epoxied a magnet to the edge of the garage door where it would be aligned with the sensor when the door is closed. I have about 3/8" (about 9 - 10 mm) air gap between the magnet and sensor, and it is working fine.I have the sensor connected directly to the Raspberry Pi as follows:The sensor's brown wire connects to pin 2 of the GPIO header for the +5V supply.The sensor's blue wire connects to pin 6 of the GPIO header for the ground connection.The sensor's black wire connects to pin 8 (or any input of your choice -- configure your software to match.)The black wire/Pin 8 also needs to connect to a resistor (2200 - 4700 ohm is fine) and the other side of that resistor connects to pin 1 (3.3 V) of the Raspberry Pi GPIO connector. The black wire in the sensor provides an open-drain output, which means that it can provide a ground-level signal to pin 8 in one state, but to provide a voltage to pin 8 in the other state, you need to use the resistor (pull-up resistor) that connects to the Pi's 3.3V The Raspberry Pi inputs cannot tolerate more than 3.3 volts on an input pin.The specifications state that it has an NPN transistor output, and that configuration would be called open-collector, which in this application, works the same as the open drain output on what is clearly a FET: The on-state (conducting) voltage drop from black to blue wire was measured at about 20 millivolts.
Clifton W. Sanchez
Comentado en los Estados Unidos el 30 de agosto de 2019
I like these sensors because they are sealed hall effect sensors. The cylindrical shape makes them easy to mount with just a drill. They respond to the south pole of a magnet.However, if you need to interface them to 3V logic, you need to level shift, current limit, or use a blocking diode.
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