Overview
Manuals
Principle
Core Application
Features:
- Serial interface CANopen
- Inductive strip centre measuring system
- Supply electronics of the transmitter coils
The SMI2.11.3 is a high-precision inductive sensor manufactured by EMG, specifically designed for strip alignment or edge measurement in metalworking production lines. As a high-precision non-contact sensor, it captures real-time positional changes in conductive materials such as steel or aluminum strip, making it particularly suitable for harsh industrial environments such as pickling, cold rolling, and coating. This model features excellent contamination resistance and thermal stability, ensuring reliable linear position feedback for control systems even in oil mist, humid, or high-temperature environments.
In practical applications, the SMI2.11.3 is typically used in conjunction with EMG's electronic amplifiers (such as iCON®) to form a closed-loop strip misalignment control system. It not only measures the absolute edge position of the strip but also automatically compensates for width variations, achieving precise alignment control. Furthermore, due to its robust and durable design, this sensor is often installed in core components of uncoilers, coilers, or bending machines, significantly improving production efficiency and finished product surface quality by reducing strip edge damage and uneven winding.
The SMI2.11.3 EMG Serial interface CANopen may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
EMG SMI2.11.3 Serial interface CANopen DATASHEET(manual), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Its working principle is based on electromagnetic induction differential measurement technology: the sensor contains symmetrically arranged transmitting and receiving coils, with the transmitting coil generating a high-frequency alternating magnetic field. When a conductive metal strip passes through the sensor probe, eddy currents are generated inside the material, thereby changing the induced voltage in the receiving coil. By measuring the difference between the induced signals on both sides, the sensor can accurately calculate the offset of the metal strip relative to the center position and convert it into a proportional electrical signal output to the upper-level control system.
SMI 2.11.3 is designed for environments where standard optical sensors may fail due to contamination or material properties:
Harsh Environments: Ideal for strip pickling, cleaning, and galvanizing lines. It maintains full operational functionality even when exposed to corrosive liquids, oil mist, steam, or temperatures up to 80°C.
Multiple Material Handling: Reliably detects all conductive materials, including non-magnetic metals such as aluminum, copper, brass, and austenitic chromium-nickel steel (e.g., 1.4301).
Strip Guiding Systems: Used in uncoilers, rewinders, and guide rollers to ensure metal strip remains perfectly centered or follows a specific edge path. This prevents edge damage and ensures precise winding.
Width Measurement and Quality Control: Integrated into systems such as EMG BREIMO or EMG iSCAN® to provide accurate strip width data and detect geometric deviations such as curvature or thickness wedges.
