IFM E21322 is a fibre optic diffuse reflection sensor designed for object detection using reflected light. It features an M4 threaded sensing head and a 2000 mm fibre optic assembly for flexible machine installation. The sensor is designed for use in difficult-to-access areas and industrial environments. Its bending-resistant design makes it suitable for robotic and automated machinery. The fibre optic assembly can be cut to the required length during installation.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
E21322 uses the diffuse reflection sensing principle to detect objects by receiving reflected optical energy from the target. This eliminates the need for a separate transmitter and receiver arrangement at the sensing point. The sensor can be used with compatible IFM fibre optic amplifiers for signal evaluation. Its compact sensing head allows detection in locations where conventional photoelectric sensors may not fit. This makes it suitable for industrial object detection applications.
The 2000 mm fibre optic length provides considerable flexibility when routing the sensing element around machinery. The fibre can be positioned away from the amplifier and routed into restricted machine areas. The minimum bending radius is approximately 5 mm, supporting flexible installation while maintaining the optical path. The sensing head has a straight configuration for straightforward mounting. This design simplifies integration into production machines and automation equipment.
The fibre optic assembly uses PMMA optical fibre with a stainless-steel sensing head and PE sheath. These materials provide a practical combination of optical performance and mechanical durability. The sensor is designed for ambient temperatures from -40 to 70 °C. Its bending-resistant design makes it suitable for industrial and robotic environments. The construction supports reliable performance during continuous machine operation.
E21322 can be used with OBF, OO50 and OCF fibre optic amplifier types. The available sensing range depends on the selected amplifier. The OBF range is approximately 10 mm, OO50 provides approximately 30 mm and OCF High Power can provide approximately 180 mm. This allows the same fibre optic sensor concept to be adapted to different machine detection requirements.
Diffuse reflection sensing principle
FT-11-EPA-M4/F0.5x1/2m design
Straight sensing head
M4 sensing head thread
2000 mm fibre length
Minimum bending radius approximately 5 mm
PMMA fibre material
Stainless-steel sensing head
PE fibre sheath
Compatible with OBF, OO50 and OCF amplifiers
Bending-resistant design
Suitable for industrial environments
Object detection
Parts presence detection
Machine automation
Robotic equipment
Conveyor systems
Assembly lines
Production machinery
Industrial inspection
Small-part detection
Automation systems
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21322 |
| Product Type | Fibre Optic Diffuse Reflection Sensor |
| Product Designation | FT-11-EPA-M4/F0.5x1/2m |
| Function Principle | Diffuse reflection sensor |
| Compatible Amplifiers | OBF, OO50, OCF |
| OBF Range | 10 mm |
| OO50 Range | 30 mm |
| OCF High Power Range | 180 mm |
| Ambient Temperature | -40 to 70 °C |
| Sensing Head Version | Straight |
| Sensing Head Thread | M4 |
| Sensing Head Length | 23 mm |
| Total Length | 2000 mm |
| Minimum Bending Radius | 5 mm |
| Core Diameter | 4 × 0.25 mm |
| Fibre Material | PMMA |
| Fibre Head Material | Stainless steel 1.4305 / 303 |
| Fibre Sheath Material | PE |
| Weight | 30.6 g |
| Supplied Nuts | 2 × M4 hexagon nuts |
| Supplied Washers | 2 × tooth lock washers |
| Optional Accessory | Fibre optic cutter E20600 |
| Pack Quantity | 1 pc |
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