| Brand | Autonics |
|---|---|
| Series | PR |
| Product Type | Cylindrical inductive proximity sensor, DC 3-wire |
| Model | PR12-4DN |
| Part No | PR12-4DN |
| Housing | M12 × 1 threaded cylindrical, standard length |
| Mounting Type | Non-shielded (non-flush) |
| Sensing Distance | 4 mm |
| Setting Distance | 0–2.8 mm |
| Hysteresis | Max. 10% of sensing distance |
| Standard Sensing Target | Iron, 12 × 12 × 1 mm |
| Power Supply | 12–24 VDC (operating voltage 10–30 VDC) |
| Current Consumption | Max. 10 mA |
| Output | NPN normally open (NO) |
| Control Output | Max. 200 mA |
| Residual Voltage | Max. 1.5 V |
| Response Frequency | 500 Hz |
| Temperature Influence | Max. ±10% of sensing distance at 20 °C |
| Indicator | Operation indicator (red LED) |
| Protection Circuits | Surge protection, reverse polarity protection, overcurrent protection |
| Insulation Resistance | Min. 50 MΩ (at 500 VDC) |
| Dielectric Strength | 1,500 VAC, 50/60 Hz for 1 min |
| Vibration | 1 mm amplitude at 10–55 Hz, 2 hours each in X/Y/Z |
| Shock | 500 m/s² (approx. 50 G), 3 times each in X/Y/Z |
| Ambient Temperature | -25 to 70 °C (storage -30 to 80 °C) |
| Ambient Humidity | 35–95% RH |
| Degree of Protection | IP67 (IEC) |
| Cable | Ø4 mm, 3-wire, 2 m, PVC |
| Material | Case/nut: nickel-plated brass; sensing surface: PBT |
| Weight | Approx. 72 g (approx. 84 g packed) |
Product Overview
The Autonics PR12-4DN is an M12 cylindrical inductive proximity sensor from the Autonics PR series, designed for non-contact detection of metal targets. As a non-shielded (non-flush) DC 3-wire type, it offers a 4 mm sensing distance (0–2.8 mm setting distance) and an NPN normally open output that switches up to 200 mA, powered from 12–24 VDC (10–30 VDC operating range).
With a response frequency of 500 Hz, a nickel-plated brass housing with PBT sensing face, IP67 protection and built-in surge, reverse-polarity and overcurrent protection, the PR12-4DN is a dependable sensor for position, limit and counting tasks. A red LED shows the output status, and the 2 m pre-wired cable makes it easy to connect to PLC inputs and counters.
Key Features
- M12 cylindrical housing, 4 mm sensing distance
- Non-shielded (non-flush) mounting type
- NPN normally open output, max. 200 mA
- 12–24 VDC supply (10–30 VDC operating range)
- 500 Hz response frequency
- Surge, reverse polarity and overcurrent protection
- IP67 nickel-plated brass housing
- Red LED operation indicator, 2 m cable
Applications
- Metal object detection on conveyors
- Machine position and end-limit sensing
- Counting metal parts and gear teeth
- Speed and rotation monitoring
- Machine tools and CNC equipment
- Packaging and assembly machines
- Cylinder and actuator position sensing
- PLC input sensing in industrial automation
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