The IFM E21171 is a protective cover designed for O1D optical distance sensors in industrial automation applications. It protects the sensor front pane from soiling, impact and mechanical damage during operation. The cover combines a black die-cast zinc bezel with a transparent glass front pane for durable protection. Its compact 42 × 4.6 × 42 mm construction allows convenient installation on compatible O1D sensors. The accessory is designed for quick and economical fixing in demanding industrial environments.
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The E21171 provides an additional protective layer over the front optical area of compatible O1D distance sensors. It helps reduce direct exposure of the sensor front pane to dust, dirt and accidental contact. The transparent glass window maintains the optical path required for distance measurement. Its robust construction is suitable for continuous industrial operation. This makes it a practical accessory for protecting expensive optical sensing equipment.
The protective cover uses a black-finished die-cast zinc bezel and a transparent, uncoloured glass front pane. An FPM seal provides sealing between the protective components and the sensor assembly. Stainless-steel screws are supplied for secure installation. This combination provides good mechanical durability for industrial applications. The construction is suitable for machine environments where impact and contamination are common.
The E21171 has compact dimensions of 42 × 4.6 × 42 mm, allowing it to be installed without significantly increasing the sensor footprint. Four M3 × 8 mm screws are supplied with the product. The specified screw tightening torque is 0.6 Nm. The cover can be mounted quickly on compatible O1D sensors. IFM notes that attaching the cover can change the measured distance value by up to +5 mm.
Protective cover for O1D optical distance sensors
Transparent glass front pane
Black die-cast zinc bezel
FPM sealing
Stainless-steel mounting screws
Compact 42 × 4.6 × 42 mm construction
Protection against soiling and damage
Protection against impact and shock
Quick and economical fixing
O1D optical distance sensor protection
Industrial automation
Machine-building equipment
Factory production systems
Dust-prone environments
Sensor installations requiring front protection
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | E21171 |
| Product Type | Protective cover |
| Order Code | E21171 |
| Product Name | MASKING FRAME FOR O1D GLAS |
| Compatible Sensor | O1D optical distance sensors |
| Application | Sensor front protection |
| Bezel Material | Die-cast zinc |
| Bezel Finish | Black |
| Front Pane Material | Glass |
| Front Pane Colour | Transparent / uncoloured |
| Sealing Material | FPM |
| Seal Hardness | 75 ±5 Shore A |
| Screw Material | Stainless steel |
| Screw Size | M3 × 8 mm |
| Number of Screws | 4 |
| Tightening Torque | 0.6 Nm |
| Dimensions | 42 × 4.6 × 42 mm |
| Weight | Approx. 39.5 g |
| Protection Function | Soiling, impact and shock protection |
| Measurement Deviation | Up to +5 mm |
| Mounting | Front mounting on O1D |
| Pack Quantity | 1 piece |
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