PRD18-7DN Autonics Inductive Proximity Sensor
Autonics PRD18-7DN Inductive Proximity Sensor – M18, 7 mm, NPN, DC 3-Wire
Autonics PRD18-7DN is an M18 inductive proximity sensor with a 7 mm sensing distance and NPN DC 3-wire output.
Designed for reliable metal detection in PLC-controlled industrial machinery with flush mounting.
The Autonics PRD18-7DN is a cylindrical inductive proximity sensor designed for detecting metal objects only in industrial automation environments. With an M18 threaded housing, 7 mm sensing distance, flush (shielded) installation, and NPN DC 3-wire output, it provides stable and interference-resistant detection for control panels, conveyors, and automated machinery.
Key Features
Detects metal objects only (inductive sensing principle)
Robust M18 cylindrical housing
7 mm sensing distance (flush / shielded)
NPN, DC 3-wire output
Ideal for installations near metal surfaces
Red LED operation indicator
Reverse polarity & short-circuit protection
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PRD18-7DN |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M18 |
| Installation | Flush (Shielded) |
| Sensing Distance | 7 mm |
| Setting Distance | 0 – 4.9 mm |
| Standard Target | Iron 20 × 20 × 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
Control & junction panels
Conveyors & material handling
Packaging & assembly machines
Position, limit & presence detection
Industrial OEM equipment
What’s in the Box
1 × Autonics PRD18-7DN Sensor
2 × Mounting nuts
1 × Washer
Instruction leaflet
FAQ
Q1. What material can PRD18-7DN detect?
Only metal objects (inductive sensing).
Q2. Is PRD18-7DN suitable for PLC input?
Yes. It has NPN DC 3-wire output, commonly used with PLC digital inputs.
Q3. What is the sensing distance?
7 mm with a standard iron target.
Q4. Why choose flush mounting?
Flush installation prevents false triggering from surrounding metal surfaces.
Q5. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.