M12/L=35mm Hall effect magnetic proximity sensor - NPN/PNP (all polarity)
✨Features
Product Introduction
The M12 Magnetic Proximity Sensor is a durable, industrial-grade position sensor designed for harsh automation environments. With its sturdy Stainless Steel M12 housing, it offers superior mechanical strength compared to smaller M8 or smooth-barrel sensors.
Utilizing Hall Effect technology, it provides a reliable 10mm sensing range for magnetic targets, capable of sensing through non-ferrous materials like aluminum or plastic. It consumes very low power (<= 10mA) and offers versatile output configurations, including NPN, PNP, and NO+NC (4-wire) options. Rated IP67 and equipped with a robust PUR cable, it is the ideal choice for heavy machinery, automotive assembly lines, and hydraulic cylinder position monitoring.
Size and Structure
Circuit diagram
| Parameter | Specification |
|---|---|
| Product Type | Magnetic Proximity Sensor (Hall Effect) |
| Housing Structure | Cylindrical Threaded |
| Thread Size | M12 x 1 |
| Dimensions | Length 35 mm |
| Usable Thread Length | 35 mm (Full Thread) |
| Mounting | Flush (Embedded) |
| Sensing Distance (Sn) | 10 mm (Standard NdFeB Magnet) |
| Polarity Detection | N Pole & S Pole (Omnipolar) |
| Operating Voltage | 10 ... 30 VDC |
| Load Current | <= 200 mA |
| Current Consumption | <= 10 mA (High Efficiency) |
| 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 4.0mm |
| Housing Material | Stainless Steel |
| Sensing Face | PBT |
| Ambient Temperature | -25 C ... +80 C |
| Protection Degree | IP67 |
| Accessories | 2 x Fixing Nuts |
| Weight | 75g |
FAQ
Q：The specs mention "NO+NC". What does this mean?
A：This stands for Normally Open + Normally Closed. It is often called a "Complementary Output." The sensor has 4 wires instead of the usual 3. One output wire is ON when the magnet is present, and the other wire is OFF. This gives you two simultaneous signals, which is useful for self-diagnostics or dual-input controllers.
Q：Can I use a Ferrite magnet instead of Neodymium (NdFeB)?
A：Yes, but the sensing distance will decrease. The rated 10mm range is based on a strong NdFeB magnet (phi 5x3mm). A weaker ferrite magnet might only be detected at 3mm or 5mm.
Q：Can this sensor be flush mounted in steel?
A：Yes. Since it detects magnetic fields and not metal, the surrounding steel mounting bracket does not interfere with the sensor's operation (unlike inductive sensors). However, ensure the target magnet is not mounted directly on a ferrous surface that might shunt (absorb) the magnetic field away from the sensor.
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