IFM E21315 is a fibre optic through-beam sensor designed for industrial object detection and presence sensing. Its flat rectangular fibre design supports installation in locations with limited space. The sensor provides different operating ranges when paired with OBF, OCF High Power and OO50 fibre-optic amplifiers. It has a 2 m fibre length, 2 mm minimum bending radius and angled sensing head. The PMMA fibre and stainless-steel fibre head provide a durable solution for automated machinery.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
E21315 uses the through-beam sensing principle for reliable object interruption detection. It supports OBF, OCF and OO50 fibre-optic amplifiers. The available ranges are 100 mm with OBF, 4000 mm with OCF High Power and 250 mm with OO50. This range selection allows the sensor to be matched to different machine layouts. The through-beam arrangement is useful for detecting objects passing through a defined sensing path.
The sensor has an angled sensing head measuring 3 x 8.5 x 15 mm. Its compact profile allows installation close to the target without requiring a large sensor housing. The angled head can simplify positioning in areas where direct straight access is restricted. The flat rectangular fibre arrangement is suitable for compact automation equipment. It can therefore be integrated into machinery with limited mounting clearance.
E21315 uses PMMA fibre with a stainless-steel 303 / 1.4305 fibre head and PE sheath. The total fibre length is 2000 mm, providing flexible routing from the sensing location to the amplifier. The minimum bending radius is 2 mm. Four M2 stainless-steel hexagon nuts are supplied with the sensor. The E20600 fibre optic cutter can be used as an optional accessory for fibre preparation.
Through-beam sensing
OBF / OCF / OO50 amplifier compatibility
Up to 4000 mm OCF High Power range
Angled sensing head
3 x 8.5 x 15 mm probe
2 m fibre length
2 mm bending radius
PMMA fibre
Stainless-steel fibre head
PE sheath
Object detection
Presence detection
Conveyor automation
Packaging machinery
Assembly lines
Small-part detection
Production machinery
Industrial automation
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21315 |
| Product Type | Fibre Optic Through-Beam Sensor |
| Product Designation | FE-11-EPV-Q3/F1x1/2m |
| Function Principle | Through-beam sensor |
| Application | Industrial environments |
| Amplifier Compatibility | OBF / OCF / OO50 |
| OBF Range | 100 mm |
| OCF High Power Range | 4000 mm |
| OO50 Range | 250 mm |
| Ambient Temperature | -40...70°C |
| Weight | 48.5 g |
| Sensing Head Version | Angled |
| Sensing Head Height | 3 mm |
| Sensing Head Width | 8.5 mm |
| Sensing Head Length | 15 mm |
| Probe Dimensions | 3 x 8.5 x 15 mm |
| Total Fibre Length | 2000 mm |
| Minimum Bending Radius | 2 mm |
| Core Diameter | 1 mm |
| Fibre Material | PMMA |
| Fibre Head Material | Stainless steel 303 / 1.4305 |
| Fibre Sheath Material | PE |
| Supplied Hardware | 4 × M2 hexagon nuts |
| Nut Material | Stainless steel |
| Optional Accessory | Fibre optic cutter E20600 |
| Pack Quantity | 1 pc |
Browse product families and jump into the exact catalog section you need.