φ5 Miniature Magnetic Proximity Sensor - NPN/PNP (all polarity)
✨Features
Product Introduction
The M5 Miniature Magnetic Sensor (NPN NO) is a robust position detection solution designed for precision machinery. Housed in a standard M5 threaded body, it offers the convenience of screw-mounting while maintaining an ultra-compact footprint.
Unlike inductive sensors that detect metal, this sensor detects magnetic fields (such as NdFeB magnets). This technology allows for a sensing range of 10mm, providing reliable detection even through non-ferrous walls like aluminum or plastic housings. Rated IP67 and equipped with an oil-resistant PUR cable, it is perfectly suited for pneumatic cylinder position sensing, robotic end-effectors, and micro-assembly lines where space is limited but high reliability is required.
Size and Structure
Circuit diagram
| Parameter | Specification |
|---|---|
| Product Type | Magnetic Proximity Sensor (Hall Effect) |
| Housing Structure | Cylindrical Threaded |
| Thread Size | M5 x 0.5 |
| Dimensions | Diameter 5 mm x Length 25 mm |
| Usable Thread Length | 20 mm |
| Mounting | Flush (Embedded) |
| Sensing Distance (Sn) | 10 mm (Detected at N or S pole) |
| Standard Target | Magnet: Diameter 5 x 3 mm (NdFeB) |
| Output Type | NPN / PNP |
| Output State | NO / NC |
| Operating Voltage | 10 ... 30 VDC |
| Load Current | <= 200 mA |
| Current Consumption | <= 15 mA |
| Voltage Drop | <= 2 V |
| Switching Frequency | 1000 Hz |
| Hysteresis | 1 ... 15% (of Sr) |
| Repeat Accuracy | <= +/- 5% (of Sr) |
| Protection Circuit | Short-circuit, Reverse Polarity, Surge Protection |
| Connection | Cable 2m (PUR Material), Diameter 3.2mm |
| Housing Material | Stainless Steel |
| Sensing Face | PBT |
| Ambient Temperature | -25 C ... +80 C |
| Protection Degree | IP67 |
| Accessories | 2 x Fixing Nuts |
| Weight | 35g |
FAQ
Q：What is the advantage of the M5 threaded body compared to a smooth barrel?
A：The M5 x 0.5 thread allows for precise position adjustment using the two included locking nuts. You can screw the sensor into a bracket or tapped hole and secure it exactly where needed. This is often more secure than smooth barrel sensors, which rely on set screws or clamps that can slip under high vibration.
Q：Do I need a special magnet to use this sensor?
A：The sensor is calibrated for a standard phi 5x3mm NdFeB (Neodymium) magnet to achieve the rated 10mm range. While it works with other magnets, the sensing distance will depend on the magnetic strength. A weaker magnet (like a rubber magnetic strip) will result in a shorter sensing distance, while a larger, stronger magnet may increase the distance.
Q：What does "NPN Normally Open (NO)" mean in this context?
A：NPN means the sensor switches the output to the negative (0V) rail when active. Normally Open (NO) means the circuit is "Open" (OFF) when no magnet is present. When the magnet comes within range (10mm), the sensor closes the circuit (turns ON). This is the standard logic for most position detection applications.
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