PRT18-8DO Autonics Proximity Sensor
Autonics PRT18-8DO Inductive Proximity Sensor – M18, 8 mm, NPN, DC 3-Wire
Autonics PRT18-8DO is an M18 inductive proximity sensor with 8 mm sensing distance and NPN DC 3-wire output.
Designed for accurate metal detection in PLC-controlled industrial automation.
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The Autonics PRT18-8DO is a cylindrical inductive proximity sensor designed to detect metal objects only in industrial automation environments. With its rugged M18 threaded housing, 8 mm sensing distance (flush type), and NPN DC 3-wire normally open output, it provides stable, repeatable detection for control panels, conveyors, packaging machines, and OEM equipment connected to PLC digital inputs.
Key Features
Detects metal objects only (inductive sensing principle)
Robust M18 cylindrical housing
8 mm sensing distance (flush / shielded)
NPN, DC 3-wire Normally Open (NO) output
Suitable for PLC digital inputs
Red LED operation indicator
Reverse polarity & short-circuit protection
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PRT18-8DO |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M18 |
| Installation | Flush (Shielded) |
| Sensing Distance | 8 mm |
| Setting Distance | 0 – 5.6 mm |
| Standard Target | Iron 18 × 18 × 1 mm |
| Output Type | NPN, Normally Open (NO) |
| 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
Packaging & assembly machines
Conveyors & material handling
OEM industrial equipment
Position, limit & presence detection
What’s in the Box
1 × Autonics PRT18-8DO Sensor
2 × Mounting nuts
Instruction leaflet
FAQ
Q1. What material can PRT18-8DO detect?
Only metal objects.
Q2. Is PRT18-8DO suitable for PLC inputs?
Yes. It provides an NPN DC 3-wire output, commonly used with PLC digital inputs.
Q3. What is the sensing distance?
8 mm with a standard iron target.
Q4. What does flush mounting mean?
Flush mounting allows installation level with surrounding metal without false triggering.
Q5. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.