Cylinder Magnetic Sensors

I. Principle of Cylinder Magnetic Sensors
Cylinder magnetic sensors (Magnetic Proximity Sensors for Cylinders) are typically used with cylinder pistons equipped with a magnetic band.
• 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 influences the sensing element (such as a Reed Switch or Hall Sensor), generating a switching signal.
• Output Characteristics: Usually provides binary signals (ON/OFF); some advanced models can output analog signals to determine position.

II. Features
1) Hall Effect Sensor: Non-contact design with no mechanical contacts, vibration-resistant, long service life, and capable of operating at high frequencies.
2) 2-wire non-contact type and 3-wire PNP/NPN type

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: Confirms 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 with PLCs or controllers for sequential operation control. Example: The next process starts only 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 uses high-frequency, fast detection applications.