IFM E21325 is a fibre optic through-beam sensor designed for object detection in industrial and robotic automation applications. It uses a straight M3 sensing head and a 2000 mm fibre optic assembly. The bending-resistant fibre design allows flexible routing through machine structures and restricted spaces. It can be used with OBF, OO50 and OCF fibre optic amplifiers. The compact and durable construction makes it suitable for reliable industrial sensing applications.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
E21325 uses the through-beam sensing principle to detect interruption of the optical path. This provides a reliable method for detecting objects passing through the sensing zone. The fibre optic assembly can be positioned around machinery while the amplifier is installed separately. This arrangement is useful where conventional sensor bodies cannot be installed directly at the detection point. It supports dependable object detection in automated production systems.
The sensor features a straight sensing head with an M3 sensing head thread. The straight configuration provides convenient alignment toward the required detection point. The compact head design helps reduce installation requirements in machine assemblies. The mechanical construction is designed for industrial environments. This makes the sensor suitable for integration into production machinery and robotic systems.
The fibre assembly has a total length of 2000 mm, providing flexibility when routing the sensing element. The minimum bending radius is approximately 2 mm, supporting installation through relatively compact machine spaces. PMMA fibre provides the optical transmission path while the protective PE sheath provides mechanical protection. The fibre head is manufactured from stainless steel. This construction is suitable for continuous industrial operation.
E21325 is compatible with OBF, OO50 and OCF fibre optic amplifiers. The fibre range is approximately 56 mm with OBF, 120 mm with OO50 and up to 2280 mm with OCF High Power. This wide range allows the sensor to be configured for different detection distances. Users can select the amplifier according to the required machine application. The combination provides flexible optical sensing for industrial automation.
Through-beam sensing
FE-11-EPA-M3/F0.5x1/2m
Straight sensing head
M3 sensing head thread
2000 mm fibre length
Minimum bending radius approximately 2 mm
PMMA fibre
Stainless-steel fibre head
PE sheath
OBF, OO50 and OCF compatibility
Bending-resistant design
Suitable for robotics
Object presence detection
Parts counting
Conveyor automation
Robotic machinery
Assembly lines
Production equipment
Material handling
Machine monitoring
Industrial automation
Component detection
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21325 |
| Product Type | Fibre Optic Through-Beam Sensor |
| Product Designation | FE-11-EPA-M3/F0.5x1/2m |
| Function Principle | Through-beam sensor |
| Compatible Amplifiers | OBF, OO50, OCF |
| OBF Range | 56 mm |
| OO50 Range | 120 mm |
| OCF High Power Range | 2280 mm |
| Ambient Temperature | -40 to 70 °C |
| Sensing Head Version | Straight |
| Sensing Head Thread | M3 |
| Total Length | 2000 mm |
| Minimum Bending Radius | 2 mm |
| Core Diameter | 4 × 0.25 mm |
| Fibre Material | PMMA |
| Fibre Head Material | Stainless steel 1.4305 / 303 |
| Fibre Sheath Material | PE |
| Weight | 32.05 g |
| Supplied Nuts | 4 × M3 hexagon nuts |
| Supplied Washers | 4 × tooth lock washers |
| Optional Accessory | Fibre optic cutter E20600 |
| Pack Quantity | 1 pc |
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