Pepperl+Fuchs NJ3-18GK-S1N

Inductive sensor
SKU: NJ3-18GK-S1N
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The inductive sensor is a cylindrical type sensor designed for precise detection of metallic objects without direct contact. With a rated operating distance of 3 mm, it is suitable for various industrial applications.

All description
Manufacturer: Pepperl+Fuchs
Description:

Inductive proximity sensors are essential components in automation and control systems, widely utilized for non-contact detection of metallic objects. These sensors operate on the principle of electromagnetic induction, generating an oscillating electromagnetic field that can sense the presence of metallic targets within its detection range. This technology ensures reliable performance in various environments, making them ideal for manufacturing, packaging, and material handling operations.

The sensors are constructed with a durable housing made of Hostalen PPN, ensuring robustness in demanding industrial settings. With a housing diameter of 18 mm and a rated operating distance of 3 mm, these sensors are designed for flush mounting in mild steel, providing versatility and ease of installation. The output type is a 2-wire configuration, compatible with DC voltage, allowing for straightforward integration into existing systems. Additionally, these sensors are ATEX certified for use in potentially explosive atmospheres, further enhancing their application scope in safety-critical environments.

General specifications
Switching element function NAMUR, NO
Rated operating distance 3 mm
Installation flush in mild steel
Output polarity Safety Function
Assured operating distance 0 … 2.4 mm
Reduction factor rAl 1
Reduction factor rCu 1
Reduction factor r304 0
Safety Integrity Level (SIL) up to SIL3 acc. to IEC 61508 Danger! In safety-related applications the sensor must be operated with a qualified fail safe interface from Pepperl+Fuchs, such as KFD2-SH-EX1.
Consider the exida Functional Safety Assessment document which is available on www.PEPPERL+FUCHS.com as an integral part of this product’s documentation.
Nominal ratings
Nominal voltage 8 V DC
Switching frequency 0 … 200 Hz
Hysteresis typ. 0.1 %
Suitable for 2:1 technology yes , Reverse polarity protection diode not required
Current consumption
Measuring plate not detected less than or equal to 1 mA
Measuring plate detected greater or equal 3 mA
Functional safety related parameters
MTTFd 7660 a
Mission Time (TM) 20 a
Diagnostic Coverage (DC) 0 %
Approvals and certificates
FM approval
Control drawing 116-0165F
UL approval cULus Listed, General Purpose
CSA approval cCSAus Listed, General Purpose
CCC approval CCC approval / marking not required for products rated less than or equal to 36 V
Ambient conditions
Ambient temperature -25 … 100 °C (-13 … 212 °F)
Mechanical specifications
Connection type cable silicone , 2 m
Core cross-section 0.75 mm2
Housing material Hostalen PPN, black
Sensing face Hostalen PPN, black
Housing diameter 18 mm
Degree of protection IP68
Note only for non-ferrous metal
General information
Use in the hazardous area see instruction manuals
Category 1G- 2G- 3G- 1D
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