OMRON E3Z-R81 — Retro-Reflective Sensors
Omron E3Z-R81: polarized retro-reflective photoelectric sensor, 4 m, IP67.
Status: In production
Brand: Omron
Product: Polarized retro-reflective photoelectric sensor
Sensing range: 4 m
Output: PNP
Response time: 1 ms
Protection: IP67
E3Z-R81 is the polarised retro-reflective model of Omron’s E3Z compact photoelectric series with built-in amplifier; the M.S.R. (mirror surface rejection) function distinguishes reflections from glossy objects from the reflector. Sensing range: 4 m (4,000 mm). Emitting element: polarized red light.
Output: PNP; Dark-ON, Light-ON. Response time: 1 ms. Supply: 12–24 V DC. Degree of protection IP67. Connection: cable.
Omron E3Z-R81 technical specifications
| E3Z-R81 | |
|---|---|
| General | |
| Shape | Cuboid |
| Sensing method | Retro-reflective |
| Feature | M.S.R. (mirror surface rejection) |
| Sensing | |
| Sensing distance | 4 m (4,000 mm) |
| Sensing distance (min.) | 100 mm |
| Setting method | Manual adjustment |
| Type of light | Polarized red light |
| Electrical characteristics | |
| Power supply voltage | 12–24 V DC |
| Output and indicators | |
| Output type | PNP |
| Operation mode | Dark-ON, Light-ON |
| Response time | 1 ms |
| Environmental | |
| Degree of protection | IP67 |
| Mechanical and connection | |
| Connection method | Cable |
| Housing material | PBT |
| Dimensions | 10.8 × 31 × 20 mm (W × H × D) |
| Cable length | 0.5 m / 2 m / 5 m (depending on part number) |
Key features
- 4 m (4,000 mm)
- PNP
- 1 ms
- IP67
E3Z-R81 ordering codes
| Part number | Description |
|---|---|
| E3Z-R81-0-5M | PNP, 0.5 m cable |
| E3Z-R81-2M | PNP, 2 m cable |
| E3Z-R81-5M | PNP, 5 m cable |
| E3Z-R81-IL3-2M | PNP + IO-Link (COM3), 2 m cable |
E3Z-R81 accessories
Accessories listed by the manufacturer for this model (ordered separately):
| Part number | Description |
|---|---|
| E39-L104 | Mounting bracket, standard, vertical mounting |
| E39-L142 | Mounting bracket, protective side wall |
| E39-L144 | Protective mounting bracket (for pre-wired E3Z) |
| E39-L150 | Mounting bracket, 100 mm high post |
| E39-L151 | Mounting bracket, 200 mm high post |
| E39-L43 | Mounting bracket, side mounting |
| E39-L44 | Mounting bracket, rear mounting |
| E39-L93FH | Mounting bracket, 3D telescope mounting |
| E39-L96 | Optional reflector bracket |
| E39-R1S | Reflector, 40 × 60 × 7.5 mm, ABS and acrylic |
| E39-R40 | Reflector, 84.5 × 84.5 × 8.7 mm |
| E39-R7 | Round reflector, Ø84 mm |
| E39-RS1 | Self-adhesive reflective tape, 35 × 10 mm |
| E39-RS2 | Self-adhesive reflective tape, 40 × 35 × 0.5 mm |
| E39-RS25 5M | Reflective tape, 25 mm × 5 m |
| E39-RS3 | Self-adhesive reflective tape, 70 × 80 mm |
| E39-RS50 5M | Reflective tape, 50 mm × 5 m |
| E39-L153 | L-shaped mounting bracket (for pre-wired type) |
| E39-L98 | Protective metal cover (E3S-A / E3Z vertical sensor) |
| E39-R10 | Reflector, ABS and acrylic |
| E39-R1K | Reflector, 40 × 60 × 7.5 mm, anti-fogging coating |
| E39-R2 | Reflector, 80.8 × 60 × 7.5 mm |
| E39-R3 | Reflector, 38 × 22.5 × 11 mm |
| E39-R4 | Reflector, 23 × 14 mm |
| E39-R8 | Reflector, 100 × 100 mm |
| E39-R9 | Reflector, 35.4 × 42.3 mm |
Other Omron Retro-Reflective Sensors
- OMRON E3Z-R81-IL3-2M — Polarized retro-reflective photoelectric sensor
Models from other brands: Retro-Reflective Sensors
Is this sensor right for your application?
Share the sensor–reflector distance, the object (opaque, glossy, transparent), ambient conditions and your PLC input (NPN/PNP, IO-Link); let’s select the right retro-reflective sensor and reflector together.
All product specifications are subject to change without notice. Data compiled from the specification and accessory lists on Omron Industrial Automation Europe’s industrial.omron.eu product pages: E3Z-R81-2M, E3Z-R81-0-5M, E3Z-R81-5M. The image shows the series.