Autonics PR Series Cylindrical Inductive Proximity Sensor Switch(AC-2-Wire-Type)
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2025/7/4 Update
Autonics PR Series Cylindrical Inductive Proximity Sensor Switch(AC-2-Wire-Type)
— Offer multiple installation types, detection diameters, and distances. They ensure stable operation, with certifications, and come in various wire types and connection specifications.
— Offer multiple installation types, detection diameters, and distances. They ensure stable operation, with certifications, and come in various wire types and connection specifications.
Autonics PR Series Cylindrical Inductive Proximity Sensor Switch(AC-2-Wire-Type)
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Technical Features
Products Specifications
| Mounting type | Flush type | Flush type | Flush type |
|---|---|---|---|
| Standard type | PR☐12-2A☐ | PR☐18-5A☐ | PR☐30-10A☐ |
| Splash-proof type | PRA☐12-2A☐ | PRA☐18-5A☐ | PRA☐30-10A☐ |
| Sensing side diameter | Ø 12 mm | Ø 18 mm | Ø 30 mm |
| Sensing distance | 2 mm | 5 mm | 10 mm |
| Setting distance | 0 ~ 1.4 mm | 0 ~ 3.5 mm | 0 ~ 7 mm |
| Hysteresis | ≤10% of sensing distance | ||
| Standard sensing target: Iron | 12 × 12 × 1 mm | 18 × 18 × 1 mm | 30 × 30 × 1 mm |
| Response frequency 01) | 20 Hz | ||
| Influence of temperature | Within ±10% of sensing distance at 20°C ambient temperature | ||
| Indicator | Operation indicator (red) | ||
| Approvals |  | | |
- The response frequency is an average value. The measurement conditions are: using the standard sensing target, the distance to the target is twice the size of the standard sensing target, and the setting distance is 1/2 of the sensing distance.
| Product weight (including packaging) | Ø 12 mm | Ø 18 mm | Ø 30 mm | |
|---|---|---|---|---|
| Cable type | Normal | ≈ 72 g (≈ 84 g) 01) | ≈ 118 g (≈ 130 g) 02) | ≈ 170 g (≈ 207 g) |
| Long | – | ≈ 130 g (≈ 142 g) | ≈ 208 g (≈ 245 g) | |
| Cable with plug type | Normal | ≈ 42 g (≈ 54 g) | ≈ 66 g (≈ 78 g) | ≈ 122 g (≈ 134 g) |
| Long | – | ≈ 78 g (≈ 90 g) | ≈ 158 g (≈ 195 g) | |
| Plug-in type | Normal | ≈ 30 g (≈ 42 g) | ≈ 54 g (≈ 66 g) | ≈ 142 g (≈ 154 g) |
| Long | – | ≈ 66 g (≈ 78 g) | ≈ 182 g (≈ 194 g) | |
- Spatter-resistant type: ≈ 66 g (≈ 78 g)
- Spatter-resistant type: ≈ 106 g (≈ 118 g)
| Power supply voltage | 100-240 VAC ~ 50/60 Hz, Usable voltage range: 85-264 VAC ~ |
| Leakage current | ≤ 2.5 mA |
| Control output | Sensing side Ø 12 mm: 5 ~ 150 mA Sensing side Ø 18 mm, Ø 30 mm: 5 ~ 200 mA |
| Residual voltage | ≤ 10 V |
| Protection circuit | Surge protection circuit |
| Insulation resistance | ≥ 50 MΩ (500 VDC megger) |
| Insulation type | Double or reinforced insulation (Symbol: 回) Dielectric strength between measurement input and power supply: Standard type 1kV, Splash-proof type: 1.5kV |
| Dielectric strength | Standard type: 2,500 VAC ~ 50/60 Hz 1 minute (between all terminals and case) Splash-proof type: 1,500 VAC ~ 50/60 Hz 1 minute (between all terminals and case) |
| Vibration | 10 ~ 55 Hz (period 1 minute) amplitude 1mm X,Y,Z directions for 2 hours each |
| Shock | 500 m/s² (≈ 50 G) X, Y, Z directions 3 times each |
| Ambient temperature | -25 ~ 70°C, storage: -30 ~ 80°C (no freezing, no condensation) |
| Ambient humidity | 35 ~ 95 %RH, storage: 35 ~ 95 %RH (no freezing, no condensation) |
| Protection degree | IP67 (IEC standard) |
| Connection | Cable outgoing type / Cable outgoing connector type / Connector type 01) |
| Cable specification 02) | Sensing side Ø 12 mm: Ø 4 mm, 2-core Sensing side Ø 18 mm, Ø 30 mm: Ø 5 mm, 2-core |
| Conductor specification | AWG 22 (0.08 mm, 60-core), insulation outer diameter: Ø 1.25 mm |
| Connector specification | M12 connector |
| Material | Standard type cable (black): Polyvinyl chloride (PVC) |
| Standard type | Case/Nut: Brass, nickel-plated, Washer: Iron, nickel-plated, Sensing side: PBT |
| Splash-proof type | Case/Nut: Brass (PTFE non-stick coating), Washer: Iron (PTFE non-stick coating), Sensing side: PTFE |
- Except splash-proof type
- Cable outgoing type: 2m, Cable outgoing connector type: 300mm
Setting Distance Calculation Formula
The shape, size, and material of the sensing object all affect the sensing distance. For stable detection, please install within 70% of the sensing distance.
Influence of Mutual Interference and Surrounding Metal
■ Mutual Interference
As shown in the figure below, when two or more proximity switches are installed face-to-face or side-by-side, malfunctions may occur due to frequency interference. The installation spacing must meet the requirements of the table below.
■ Influence of Surrounding Metal
If metal is present around the proximity switch, it may cause malfunctions such as poor resetting. To prevent malfunctions, the installation spacing must meet the requirements of the table below.
(Unit: mm)
| Sensing side —————— Item | Ø 12 mm | Ø 18 mm | Ø 30 mm | |||
|---|---|---|---|---|---|---|
| Flush type | Non-flush type | Flush type | Non-flush type | Flush type | Non-flush type | |
| A | 12 | 24 | 30 | 48 | 60 | 90 |
| B | 24 | 36 | 36 | 54 | 60 | 90 |
| l | 0 | 11 | 0 | 14 | 0 | 15 |
| Ød | 12 | 36 | 18 | 54 | 30 | 90 |
| m | 6 | 12 | 15 | 24 | 30 | 45 |
| n | 18 | 36 | 27 | 54 | 45 | 90 |
Allowable Installation Torque
When tightening the nut, please use the provided washer. The allowable nut torque is the value when using the attached washer and inserting as shown in the figure below.
| Sensing face————Strength | Ø 12 mm | Ø 18 mm | Ø 30 mm | |||
|---|---|---|---|---|---|---|
| Flush type | Non-flush type | Flush type | Non-flush type | Flush type | Non-flush type | |
| Front-end dimension | 13 mm | 7 mm | – | – | 26 mm | 12 mm |
| Front-end torque | 6.37 N·m | 6.37 N·m | 14.7 N·m | 49 N·m | ||
| Rear-end torque | 11.76 N·m | 14.7 N·m | 78.4 N·m | |||
Safety Precautions/Precautions for Use/Installation Precautions
