PR18-8DN Autonics Proximity Sensor
Autonics PR18-8DN Inductive Proximity Sensor – M18, 8 mm, NPN, DC 3-Wire
Autonics PR18-8DN is an M18 inductive proximity sensor with an 8 mm sensing distance and NPN DC 3-wire output.
Ideal for long-range metal detection in PLC-based industrial automation systems.
The Autonics PR18-8DN is a heavy-duty inductive proximity sensor designed for detecting metal objects only at a longer sensing distance. With an M18 threaded housing, 8 mm sensing range (non-flush), and NPN DC 3-wire output, it is ideal for PLC inputs in industrial automation where extra detection clearance is required.
Key Features
Detects metal objects only (inductive principle)
Robust M18 cylindrical housing
8 mm sensing distance (non-flush / unshielded)
NPN, DC 3-wire output
Red LED operation indicator
Reverse polarity & short-circuit protection
Stable sensing with high repeatability
IP67 protection for harsh industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PR18-8DN |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M18 |
| Installation | Non-Flush (Unshielded) |
| Sensing Distance | 8 mm |
| Setting Distance | 0 – 5.6 mm |
| Standard Target | Iron 18 × 18 × 1 mm |
| Output Type | NPN |
| Wiring | DC 3-Wire |
| Supply Voltage | 12–24 V DC (10–30 V DC operating) |
| Current Consumption | ≤ 10 mA |
| Control Output | Max. 200 mA |
| Response Frequency | Approx. 300 Hz |
| Indicator | Red LED |
| Protection Rating | IP67 |
| Ambient Temperature | −25 °C to +70 °C |
| Cable Length | 2 m |
| Body Material | Nickel-plated brass |
| Sensing Face | PBT |
Applications
PLC-based automation systems
Conveyor & material handling
Packaging & assembly machines
CNC & special-purpose machines
Control & junction panels
Position, limit & counting detection
What’s in the Box
1 × Autonics PR18-8DN Sensor
2 × Mounting nuts
1 × Washer
Instruction leaflet
FAQ
Q1. What material can PR18-8DN detect?
Only metal objects (inductive sensing).
Q2. What is the difference between PR18-5DN and PR18-8DN?
PR18-8DN provides a longer sensing distance (8 mm) and is non-flush, whereas PR18-5DN is flush with a 5 mm range.
Q3. Is this sensor suitable for PLC input?
Yes. It has NPN DC 3-wire output, widely used with PLC digital inputs.
Q4. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.
Q5. What is the sensing distance?
8 mm for a standard iron target.