Cylinder Magnetic Sensors
Cylinder magnetic sensors (Magnetic Proximity Sensors for Cylinders) are commonly paired with cylinder pistons equipped with a magnetic band.

I. Principle of Cylinder Magnetic Sensors
Internal Structure: A permanent magnet is embedded in the piston rod or piston.
Detection Method: When the piston moves to the sensor’s position, the magnetic field affects the sensing element (such as a Reed Switch or Hall Sensor), generating a switching signal.
Output Characteristics: Usually provides binary signals (ON/OFF), while some advanced models can output analog signals to determine position.

II. Common Types
1. Reed Switch Type
Low cost, simple structure.
Disadvantage: Lower impact resistance and limited service life.
2. Hall Effect Sensor
No mechanical contact, vibration-resistant, and long lifespan.
Can withstand high-frequency operations.

III. Installation Position
Typically mounted in the sensor slot along the cylinder body, aligned with the piston stroke.
Can be positioned at any point along the stroke to detect “end position,” “intermediate position,” or “home position.”

IV. Application Range
1. Position Detection
Confirm whether the piston has reached a designated position (e.g., fully extended or fully retracted). Used for “position confirmation” in automated production lines.
2. Stroke Control
Works in conjunction with PLCs or controllers for sequential operation control. Example: The next process only starts once the piston reaches the target position.
3. Safety Interlock
Detects whether a workpiece has been properly clamped or pushed into place, preventing malfunction.
4. Machining Equipment
CNC fixtures and automated jigs: Detect whether clamps or jaws are closed. Packaging machines and material handling equipment: Verify completion of cylinder motion.
5. Logistics and Handling
Sorting, pushing, or positioning module action confirmation.
6. Other Examples
Automotive production lines: Detect clamp or lifting platform positions. Food/pharmaceutical packaging: High-frequency, fast detection applications.