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Home/Robotics/Sensors/Proximity/Inductive Proximity Sensor M18 – LJ18A3-8-Z/AX

Inductive Proximity Sensor 18mm - LJ18A3-8-Z/AX

Επαγωγικός Αισθητήρας Απόστασης 18mm - LJ18A3-8-Z/AX

Inductive Proximity Sensor M18 – LJ18A3-8-Z/AX

SKU:

19-00012991

Part Number: LJ18A3-8-Z/AX

CompanyOEM Part NumberLJ18A3-8-Z/AX

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Description
Specifications

Inductive proximity switches, also known as inductive proximity sensors or metal sensors, contain a high-frequency oscillation circuit, detection circuit, amplifier circuit, trigger circuit, and output circuit.

When 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 a metal object approaches this surface, eddy currents are induced within the metal, which absorb energy from the electromagnetic field. As a result, the oscillator is either weakened or stopped.

This change in the oscillator’s state is detected by the detection circuit and converted into a level signal. The signal is then amplified by the amplifier circuit and passed through the trigger circuit, which activates the output transistor circuit to produce a switching signal. This process allows the switch to detect the presence or absence of metal, thereby achieving the purpose of metal detection.

Technical data

Model: LJ18A3-8-Z/AX
Power supply voltage: 6V–36V DC
Control output: 300mA
Detection distance: 8mm
Output type: 3-wire / NPN / NC

Inductive Proximity Sensors - Comparison table

Sensor	GRobotronics SKU	Thread diameter	Detection distance	Output type
Inductive Proximity Sensor M8 – LJ8A3-2-Z/BX	19-00012485SKU copied!	8mm	2mm	3-wire / NPN / NO
Inductive Proximity Sensor M12 – LJ12A3-4-Z/EX	19-00012340SKU copied!	12mm	4mm	2-wire / NPN / NO
Inductive Proximity Sensor M18 – LJ18A3-8-Z/AX	19-00012991SKU copied!	18mm	8mm	3-wire / NPN / NC
Inductive Proximity Sensor M8 – LJ8A3-2-Z/AX	39-00013293SKU copied!	8mm	2mm	3-wire / NPN / NC
Inductive Proximity Sensor M18 – LJ18A3-8-Z/BX	19-00018970SKU copied!	18mm	8mm	3-wire / NPN / NO
Inductive Proximity Sensor M18 – LJ18A3-8-Z/BY	19-00018977SKU copied!	18mm	8mm	3-wire / PNP / NO