DPSN17-8DN / DPSN17-8DP- Denki Seigyo Square Proximity Sensor
Product Overview
The Denki Seigyo DPSN17 Series Square Proximity Sensors are high-performance inductive sensors designed for non-contact detection of metallic objects in industrial automation systems.
These sensors feature a compact 17 mm square housing, 8 mm sensing distance, and reliable PNP / NPN output configurations, making them ideal for applications requiring precise positioning, object detection, and automation control.
With IP67 protection, high noise immunity, and durable ABS housing, the DPSN17 series ensures stable operation even in harsh industrial environments.
More details, please check the Datasheet Link. DPSN17 Series proximity sensor

Product Overview
The Denki Seigyo DPSN17 Series Square Proximity Sensors (DPSN17-8DN and DPSN17-8DP) are compact, high-performance inductive sensors designed for reliable non-contact detection of metallic objects in industrial automation systems. Inductive proximity sensors detect metal targets using an electromagnetic field and are widely used in factory automation because they operate without physical contact, reducing wear and improving durability.
Built with a 17 mm square industrial housing and 8 mm sensing distance, the DPSN17 series delivers stable switching performance for precise object detection and positioning in machines and production lines. These sensors are available with NPN (DPSN17-8DN) and PNP (DPSN17-8DP) normally open outputs, making them compatible with most PLCs, controllers, and industrial automation systems.
The DPSN17 sensors feature robust ABS construction, IP67 environmental protection, reverse polarity protection, and short-circuit protection, ensuring reliable operation even in harsh industrial environments such as manufacturing plants, conveyor systems, packaging machines, and automated assembly lines.
With their compact design, high reliability, and fast response, Denki Seigyo square proximity sensors provide an efficient solution for metal detection, position sensing, and automation control applications across multiple industries.
Available Models
DPSN17-8DN – NPN Square Proximity Sensor
Model: DPSN17-8DN
Output Type: NPN Normally Open
Sensing Distance: 8 mm
Supply Voltage: 12-24 V DC
Key Features
- Compact 17 mm square sensor
- 8 mm metal detection range
- NPN normally open output
- LED operation indicator
- Short circuit protection
- Reverse polarity protection
- IP67 environmental protection
Typical Applications
- Conveyor position detection
- Industrial automation machines
- Packaging equipment
- CNC machinery
- Material handling systems
DPSN17-8DP – PNP Square Proximity Sensor
Model: DPSN17-8DP
Output Type: PNP Normally Open
Sensing Distance: 8 mm
Supply Voltage: 12-24 V DC
Key Features
- PNP normally open output
- Stable switching performance
- Excellent noise immunity
- High reliability industrial sensor
- IP67 protection rating
- Suitable for PLC interface applications
Typical Applications
- Automated assembly lines
- Machine tool positioning
- Industrial robotics
- Production automation systems
- Factory equipment monitoring
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | Inductive Proximity Sensor |
| Housing Type | Square |
| Housing Size | 17 mm |
| Sensing Distance | 8 mm |
| Standard Target | 25 × 25 × 1 mm Iron |
| Supply Voltage | 12 – 24 V DC |
| Output Type | NPN / PNP |
| Output Mode | Normally Open |
| Load Current | Max. 200 mA |
| Current Consumption | ≤ 10 mA |
| Response Frequency | 200 Hz |
| Residual Voltage | ≤ 3.5 V |
| Protection Circuit | Reverse polarity, Short circuit protection |
| Protection Rating | IP67 |
| Housing Material | Heat-resistant ABS |
| Cable Length | 2 meters |
| Operating Temperature | −25°C to +70°C |
| Indicator | Red LED |
Wiring Diagram
NPN Output – DPSN17-8DN
| Wire Color | Connection |
|---|---|
| Brown | +12-24V DC |
| Blue | 0V |
| Black | Output |
When metal is detected, the output switches to 0V.
PNP Output – DPSN17-8DP
| Wire Color | Connection |
|---|---|
| Brown | +12-24V DC |
| Blue | 0V |
| Black | Output |
When metal is detected, the output switches +V to the load.
Why Choose Denki Seigyo Proximity Sensors
✔ High detection accuracy
✔ Reliable industrial performance
✔ Long operational life
✔ Compact square sensor design
✔ Suitable for harsh industrial environments
✔ Competitive pricing for OEM and automation applications
Industries Using DPSN17 Series Sensors
Denki Seigyo proximity sensors are widely used in:
- Industrial automation
- Conveyor and material handling
- Packaging machinery
- Automotive manufacturing
- Textile machinery
- Robotics systems
- CNC machine tools
Order Information
| Model | Output Type | Sensing Distance | Connection |
|---|---|---|---|
| DPSN17-8DN | NPN NO | 8 mm | Cable |
| DPSN17-8DP | PNP NO | 8 mm | Cable |
What is the Denki Seigyo DPSN17 series proximity sensor?
The Denki Seigyo DPSN17 series is a square inductive proximity sensor designed for non-contact detection of metallic objects in industrial automation systems. These sensors are available in NPN (DPSN17-8DN) and PNP (DPSN17-8DP) output types with an 8 mm sensing distance and a compact 17 mm square housing.
What is the sensing distance of DPSN17-8DN and DPSN17-8DP?
Both DPSN17-8DN and DPSN17-8DP have a sensing distance of 8 mm when detecting standard iron targets.
What is the difference between DPSN17-8DN and DPSN17-8DP?
The main difference is the output type:
| Model | Output Type |
|---|---|
| DPSN17-8DN | NPN Normally Open |
| DPSN17-8DP | PNP Normally Open |
NPN sensors switch the output to 0V, while PNP sensors switch the output to +V.
What voltage does the Denki Seigyo DPSN17 sensor require?
The sensor operates on a 12-24 V DC power supply, making it compatible with most industrial PLC and automation systems.
Where are square proximity sensors used?
Square proximity sensors like DPSN17 series are commonly used in:
- Industrial automation machines
- Conveyor systems
- Packaging machines
- CNC machines
- Assembly lines
- Robotics systems
- Material handling equipment
What is the protection rating of DPSN17 proximity sensors?
The DPSN17 series sensors have an IP67 protection rating, which means they are resistant to dust, oil, and water, making them suitable for harsh industrial environments.
What material is used in the DPSN17 sensor housing?
The sensor housing is made from durable heat-resistant ABS plastic, ensuring strong mechanical protection and long service life.
What type of objects can inductive proximity sensors detect?
Inductive proximity sensors detect metal objects only, including:
- Iron
- Steel
- Aluminum
- Brass
- Copper
They do not detect non-metal materials such as plastic, wood, or glass.
What cable connection is used in DPSN17 sensors?
The Denki Seigyo DPSN17 series uses a 3-wire cable connection:
- Brown → Power supply (+V)
- Blue → Ground (0V)
- Black → Output signal
Why choose Denki Seigyo proximity sensors?
Denki Seigyo proximity sensors offer:
- High reliability for industrial automation
- Compact and durable design
- Stable sensing performance
- Easy PLC integration
- Competitive pricing for OEM and automation applications


