5VDC Inductive Proximity Sensor NPN NO

5VDC Inductive Proximity Sensor NPN NO

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    7
  • รหัสสินค้า: SN-LJ8A3-5V-NO
  • ระยะเวลาในการรับประกัน: 12 เดือน
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Inductive proximity sensors or switches or also known as metal sensors contain high-frequency oscillation circuit, detection circuit, amplifier circuit, the solution circuit and the output circuit. When the power is supplied to the switch, the oscillator in the high frequency oscillation circuit generates an alternating electromagnetic field on the detection surface of the switch.

When there is a metal close to the switch detection surface, the eddy current inside the metal absorbs the energy of the alternating electromagnetic field in the oscillator. The oscillator is weakened or stopped. Oscillator energy changes in the two states, the detection circuit is converted to a level signal, through the amplifier circuit to amplify the level signal after the trigger circuit to trigger the output transistor and the transistor circuit produces a switch signal. Thereby, this sensor detecting the presence or absence of the metal in order to achieve the purpose of metal detection.

 

 

Specifications:

  • Model: LJ8A3-2-Z/BX-5V
  • Type: 5VDC 3 Wire Type (Brown, Blue, Black)
    • Brown = VCC (5VDC)
    • Black = Output
    • Blue = GND
  • Output Type: NPN NO(Normal Open)
    • Although the spec stated NPN output, from our testing we notice the output is internally pullup to VCC.
    • When there is no metal detected the output is high to VCC voltage.
    • When there is metal detected, the output is LOW to GND.
  • Diameter of Head: 6.5mm/ 0.25"
  • Thread Diameter: 8mm/0.31"
  • Detecting Distance: 2mm/ 0.078"
  • Work Voltage DC: 5V
  • Consumption Current: 200mA
  • Compatible with Arduino UNO or any 5V compatible board.

Dimensions:

  • Size: 52 x 14mm/ 2" x 0.55"(L*Max.D)
  • Cable Length(Approx.): 140cm

Packing List:

  • 1x 5VDC Inductive Proximity Sensor NPN NO
Any drawings for this?
( Russel Bradley , 17/10/2020 )
Hi, we're sorry as we do not have the drawing for this product ya. Thanks :)
This sensor is analog or digital ? ( Amin, 27/02/2020 )
Hi, it is NPN (Digital). Thanks :)
Is it right detecting distance 2mm only? too small to detect the objects though, basically need to touch the object right? ( Mohamad Hafiz Ahmad , 30/09/2019 )
Yes, the detecting distance is 2mm. :)

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แท็ก: inductive proximity sensor/switch, metal sensor, 5 VDC, normally open