NG # 2262-HW-PEP-014
Pepperl+Fuchs ring-shaped inductive proximity sensors (often referred to as ring sensors or pass-through sensors) feature an open circular center aperture. An electromagnetic field is generated inside the ring body, allowing the sensor to detect small metallic parts passing through the center orifice.
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Get A QuoteRing-style proximity switches are fitted with a coil so that the switch is activated as soon as a metallic object is found inside the circumference of the ring.
Typical applications include the detection and counting of small metal parts, which are passed through the ring proximity sensor. Both ferrous (FE) and nonferrous (NFE) metals will be detected.
| Parameter | Technical Specification |
| Internal Ring Aperture Diameters | 10 mm, 15 mm, 20 mm, 43 mm (varies by model size) |
| Minimum Detectable Object Size | Down to 1.0 mm steel ball (varies depending on ring diameter) |
| Pass-through Velocity | Up to 10 m/s (high-speed detection capable) |
| Operating Voltage ($U_B$) | 10 – 30 V DC (3-wire/4-wire) or 8.2 V DC (2-wire NAMUR RJ series) |
| Output Types | PNP / NPN (NO or NC), or NAMUR (EN 60947-5-6) |
| Pulse Duration Extension | Adjustable or fixed (e.g., 10 ms) to prevent PLC signal missing |
| Housing Material | PBT / Polycarbonate durable thermoplastic |
| Operating Temperature | -25 °C to +70 °C (-13 °F to +158 °F) |
| Enclosure Rating | IP67 |
| Connection Types | M12 quick disconnect connector or integrated PVC cable |
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