Inductive Sensor CHJY Series

MOQ : 300

The CHJY8 is a high-precision 8mm inductive proximity sensor designed for reliable non-contact position detection in demanding environments. Engineered with a compact M8 diameter, this sensor is the perfect solution for space-constrained industrial layouts where mechanical contact is not feasible. By utilizing an advanced internal oscillator and amplified output circuit, the CHJY8 detects metal targets via eddy current attenuation, ensuring rapid switching signals and exceptional long-term stability.

As a versatile component in industrial automation sensors, the CHJY8 excels in high-speed applications such as CNC machine tools, packaging machinery, and indexing table positioning. Its rugged construction resists wear and tear, providing a maintenance-free alternative to traditional limit switches. Whether you are managing tension control or monitoring cylinder positions, this sensor delivers the accuracy required for modern smart manufacturing.

Key Features: 8mm Compact Diameter | Non-contact Detection | High-speed Response | Durable Industrial Build.
Applications: Machine tools, packaging lines, cam detection, and automated assembly.

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The CHJY18 is a robust M18 inductive proximity sensor designed to serve as the backbone of heavy-duty industrial sensing. With its larger 18mm diameter, this model offers enhanced stability and a superior sensing range compared to smaller variants, making it the industry standard for industrial metal detection sensors. Utilizing non-contact electromagnetic technology, the CHJY18 eliminates mechanical wear, providing consistent, high-speed switching signals even in environments prone to dust, oil, or vibration.

Engineered for seamless integration into automation control systems, the CHJY18 is highly effective for monitoring conveyor belt speeds, heavy-duty CNC positioning, and automated assembly lines. Its durable cylindrical housing ensures reliable performance under rigorous operational cycles, significantly reducing maintenance costs for end-users. For distributors seeking high-demand, versatile components, the CHJY18 delivers the perfect balance of precision and industrial-grade resilience.

Key Features: Standard M18 Housing | Extended Sensing Stability | High-Frequency Response | IP67 Rated Durability.
Applications: Conveyor systems, heavy machinery, automotive assembly, and material handling.

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The CHJY30 series stands as a heavy-duty powerhouse in the realm of M30 proximity sensors, engineered for applications requiring extended sensing distances and maximum physical resilience. With its large 30mm diameter, this sensor provides a superior detection range that smaller models cannot match, making it the premier choice for long-range inductive sensing on large-scale production lines. Its robust housing is specifically built to withstand the rigors of heavy industrial environments, ensuring consistent switching performance despite mechanical shocks or extreme debris.

Designed for high-impact factory automation solutions, the CHJY30 excels in detecting large metal components, monitoring heavy machinery positions, and streamlining material handling in logistics hubs. The non-contact design eliminates wear-related failures, offering a high-reliability alternative to mechanical limit switches in high-vibration zones. For wholesalers looking to supply the mining, construction, or automotive sectors, the CHJY30 represents a top-tier, low-maintenance component that guarantees operational uptime for end-users.

Key Features: Large M30 Industrial Housing | Extended Detection Range | Superior Shock Resistance | High-Load Durability.
Applications: Heavy-duty manufacturing, logistics sorting, metal smelting, and large-scale assembly.

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CHJY8

Specification	CHJY Series
Return Difference	Less than 15 % of detection distance
Detectable objects	Magnetic metals (shorter detection distances for non-magnetic metals)
Supply Voltage	DC10~30V
Operating current	DC(NPN,PNP) ：≤ 180mA
Residual voltage	NPN ：≤ 2.5V;PNP ：≤ 2.5V
Leakage current	When 24VDC ，max 0. 1mA
Protection circuit	Polarity, Overcurrent protection
Indicator light	360° (yellow)
Temperature range	Operating: -25～+70℃ (no icing, condensation); Storage: -40～+85℃ (no icing, condensation)
Humidity range	Operation, storage: 35～95% (no condensation)
Temperature effect (drift)	-25～+70℃ temperature range, the detection distance is within ±15% of the detection distance at +23℃
Housing Material	Chrome Plated Brass
Sensing surface material	ABS

CHJY18

Parameter	M8	M12	M18	M30
Model	CHJY8-2 / CHJY8-4	CHJY12-4 / CHJY12-8	CHJY18-8 / CHJY18-14	CHJY30-15 / CHJY30-25
Mounting Type	Flush / Non-flush	Flush / Non-flush	Flush / Non-flush	Flush / Non-flush
Sensing Distance	2±10% / 4±10% mm	4±10% / 8±10% mm	8±10% / 14±10% mm	15±10% / 25±10% mm
Detection Object	Iron	Iron	Iron	Iron
Response Frequency	1kHz / 800Hz	800Hz / 500Hz	400Hz / 200Hz	300Hz / 150Hz

CHJY30

Parameter	M8	M12	M18	M30
Model	CHJY8-2 / CHJY8-4	CHJY12-4 / CHJY12-8	CHJY18-8 / CHJY18-14	CHJY30-15 / CHJY30-25
Mounting Type	Flush / Non-flush	Flush / Non-flush	Flush / Non-flush	Flush / Non-flush
Sensing Distance	2±10% / 4±10% mm	4±10% / 8±10% mm	8±10% / 14±10% mm	15±10% / 25±10% mm
Detection Object	Iron	Iron	Iron	Iron
Response Frequency	1kHz / 800Hz	800Hz / 500Hz	400Hz / 200Hz	300Hz / 150Hz

Q1: What are the primary applications of inductive proximity sensors in automation?
Inductive sensors, such as the CHJY series, are essential for non-contact metal detection in industrial environments. They are widely used for position sensing, speed monitoring, and object counting on conveyor belts. Because they rely on electromagnetic fields, they are perfect for factory automation solutions where mechanical switches would fail due to wear or environmental contamination like oil and dust.

Q2: How do I choose the right diameter for an inductive sensor (M8 vs M18 vs M30)?
The choice depends on your required sensing distance and available mounting space.

M8 (CHJY8): Ideal for precision tasks in tight spaces with shorter detection ranges.
M18 (CHJY18): The industry standard for general-purpose sensing, balancing size and performance.
M30 (CHJY30): Best for long-range inductive sensing and heavy-duty environments where the sensor needs to be positioned further from the target.

Q3: Can these sensors detect non-metallic objects like plastic or wood?
No, inductive proximity switches are specifically designed to detect ferrous and non-ferrous metallic targets. If your application requires detecting glass, liquids, or plastic, you should look into capacitive sensors. For high-speed industrial metal detection, the CHJY series offers superior reliability and faster response times than other sensing technologies.

Q4: How to Select the Right Inductive Sensors for Your Business?
To select the right inductive sensor, you must balance technical specifications like sensing distance and mounting type (flush vs. non-flush) with electrical requirements such as PNP/NPN outputs. Furthermore, evaluating the IP rating and housing material is critical to ensure the sensor’s durability and compatibility within your specific industrial environment. Click here to know more.

Q5: Are CHJY series sensors durable enough for washdown or oily environments?
Yes, the CHJY series is built with industrial-grade materials, typically featuring an IP67 rating. This makes them highly resistant to water, oil, and common industrial coolants. Their solid-state internal design ensures a long service life in automation control systems, even in high-vibration zones where traditional limit switches would require frequent replacement.

Q6: What output types are available for the CHJY sensor series?
To ensure compatibility with various PLC and control units, our sensors come in multiple configurations, including NPN and PNP outputs with Normally Open (NO) or Normally Closed (NC) options. Always verify the voltage requirements (typically 10-30V DC) to ensure seamless integration into your existing electrical circuit.