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Home Product LJ12A3-4-Z/EX Keyence Inductive Sensor 12mm NPN Normally Closed ATEX IP67 Hazardous Area Proximity Switch
M12 Inductive proximity switch Unshielded type LJ12A3-4-Z/EX DC-2-WIRE NO

LJ12A3-4-Z/EX Keyence Inductive Sensor 12mm NPN Normally Closed ATEX IP67 Hazardous Area Proximity Switch

LJ12A3-4-Z/EX
Inductive Proximity Sensor
Explosion-proof Sensor EX
LJ12A3-4-Z/EX
LJ12A3-4-Z/EX Inductive Proximity Sensor, Explosion-proof Sensor EX for hazardous environments. Detects metal objects in explosive atmospheres with high reliability. Robust design ensures durability in industrial automation and safety-critical applications.
Categories:Automation
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Product Description

The LJ12A4-4-Z/EX Explosion-proof Inductive Proximity Sensor is a rugged sensing solution engineered for hazardous environments requiring EX certification. Operating within a 12-24V DC range, it delivers reliable non-contact detection of metallic objects up to 4mm distance with ±3% repeatability. Designed for industries like oil refining, chemical processing, and mining, this IP67-rated sensor features a compact Φ12mm stainless steel housing capable of withstanding -25°C to +70°C temperatures. Its 4-wire NPN/PNP configurable output enables direct PLC integration without additional modules. The device boasts EMI/RFI immunity and 100Hz switching frequency, though optimal performance requires avoiding non-ferrous targets. With M12 quick-disconnect compatibility and vibration-resistant construction, it ensures maintenance-free operation in explosive atmospheres while meeting ATEX/IECEx standards.
Parameter Specification
Model Number LJ12A3-4-Z/EX
Sensor Type Inductive Proximity Sensor
Certification Explosion-proof Sensor EX (ATEX/IECEx Certified)
Detection Distance 4 mm ±10%
Output Configuration NPN or PNP (Selectable)
Operating Voltage 10-30 V DC
Current Capacity ≤200 mA
Response Frequency 1 kHz
Housing Material Stainless Steel (AISI 304)
Protection Rating IP67
Temperature Range -25°C to +70°C
Connection Type 3-wire, M12 Connector
Application Hazardous Environments (Zone 20/21/22)
question:Can the company provide technical selection services?
answer:Yes, we offer technical selection services and provide customized solutions based on client needs.
question:Why can other suppliers source discontinued models you cannot?
answer:Suppliers may use existing stock or specialized channels. We focus on current models to ensure reliability.
question:Why is a handling fee charged?
answer:The handling fee covers payment processing and administrative costs, ensuring transparent and efficient transactions.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Can the company provide technical selection services?
answer:Yes, we offer technical selection services and provide customized solutions based on client needs.
question:Why can other suppliers source discontinued models you cannot?
answer:Suppliers may use existing stock or specialized channels. We focus on current models to ensure reliability.
question:Why is a handling fee charged?
answer:The handling fee covers payment processing and administrative costs, ensuring transparent and efficient transactions.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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