PRL18-8AC Autonics Proximity Sensor
Autonics PRL18-8AC Inductive Proximity Sensor – M18, 8 mm, AC 2-Wire
Autonics PRL18-8AC is an M18 inductive proximity sensor with an 8 mm sensing distance and AC 2-wire output.
Designed for reliable metal detection in direct AC control and relay circuits.
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The Autonics PRL18-8AC is a cylindrical inductive proximity sensor designed for direct AC applications where PLCs are not required. Featuring an M18 threaded housing, 8 mm sensing distance (flush type), and AC 2-wire output, it is widely used for controlling contactors, relays, solenoid valves, and pilot lamps in industrial automation panels.
Key Features
Detects metal objects only (inductive sensing principle)
Robust M18 cylindrical housing
8 mm sensing distance (flush / shielded)
AC 2-wire output (Normally Open)
Direct operation with AC loads
Red LED operation indicator
Surge suppression circuit
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PRL18-8AC |
| 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 | AC 2-Wire (NO) |
| Rated Voltage | 100–240 V AC (50/60 Hz) |
| Leakage Current | ≤ 5 mA |
| Load Current | 5–200 mA |
| Residual Voltage | ≤ 10 V |
| Response Frequency | Approx. 20 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
AC relay & contactor control
Pilot lamp switching
Solenoid valve actuation
Conventional AC control panels
Packaging & material handling machines
Metal presence & limit detection
What’s in the Box
1 × Autonics PRL18-8AC Sensor
2 × Mounting nuts
Instruction leaflet
FAQ
Q1. What type of output does PRL18-8AC have?
It has an AC 2-wire normally open output.
Q2. Can PRL18-8AC be connected directly to AC supply?
Yes. It operates on 100–240 V AC.
Q3. Is this sensor suitable for PLC inputs?
No. It is intended for direct AC loads, not PLC DC inputs.
Q4. What material can it detect?
Only metal objects.
Q5. What is the sensing distance?
8 mm with a standard iron target.