M18 Non-Flush Capacitive Proximity Sensor
✨Features
Product Introduction
The M18 Non-Flush Proximity Sensor is a versatile position detection device designed for demanding industrial applications. With its standard M18 threaded housing and 80mm body length, it offers a robust solution for automation machinery.
This model features a Non-Flush design, achieving an 8mm sensing range for reliable detection of metal objects without requiring extremely close contact. It is particularly notable for its optional PTFE (Teflon) housing, which allows it to withstand harsh wash-down procedures and corrosive chemical exposure that would damage standard metal sensors. Compatible with NPN or PNP systems and operating on 10-30 VDC, it provides a dependable solution for level detection, counting, and limit switching.
Size and Structure
Circuit diagram
| Parameter | Specification |
|---|---|
| Housing Size | M18 x 80 mm |
| Mounting | Non-Flush (Non-Shielded) |
| Sensing Distance (Sn) | 8.0 mm |
| Output Configuration | NPN / PNP (Selectable) |
| Switching Logic | NO / NC (Selectable) |
| Operating Voltage | 10 ... 30 VDC |
| Load Current | <= 200 mA |
| Current Consumption | <= 15 mA |
| Residual Voltage | <= 2.5 V |
| Switching Frequency | 100 Hz |
| Switching Point Drift | <= +/- 10% |
| Hysteresis | 3 ... 20% |
| Repeat Accuracy | <= 3% |
| Protection Circuit | Surge, Overload, Short-circuit, Reverse Polarity |
| Housing Material | Metal / Plastic / PTFE (Selectable) |
| Connection | 2m PVC Cable |
| Indicator | Yellow LED |
| Ambient Temperature | -25 C ... +60 C |
| Ambient Humidity | 35 - 95% RH |
| Protection Degree | IP67 |
FAQ
Q：How much space do I need around the sensor head?
A：Since this is a Non-Flush (Non-Shielded) sensor, the sensing coil protrudes from the housing. You must leave a "metal-free zone" around the sensing cap—typically 3 times the sensing distance (3 x Sn) in diameter—to prevent the mounting bracket from interfering with the sensor's operation.
Q：Why choose the PTFE housing over Metal?
A：PTFE (Teflon) is chemically inert and non-stick. It is the best choice if the sensor is installed in environments with:
Corrosive Chemicals: Acids, solvents, or electroplating solutions.
Sticky Materials: Glues, paints, or food dough (easier to clean).
High Hygiene Standards: Food and beverage processing.
Q：Is 100Hz adequate for my application?
A：100 Hz corresponds to a switching cycle of 10ms. This is perfectly suitable for:
Conveyor belt object detection.
Pneumatic cylinder position feedback.
Liquid level detection (using a float magnet).
It is NOT recommended for high-speed RPM counting (e.g., > 3000 RPM gear teeth).
Related Recommendations
