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Part of the Omron Photoelectric Sensors series — see the full model table, lifecycle status and replacement parts.

Omron E3Z-B61 2M — front view of the compact ABS housing showing the red LED emitter window, the receiver lens, and the four-wire pre-wired cable coming out of the rear

Omron E3Z-B61 2M — PET Bottle Retro

SKU: E3Z-B61 2M

USD 16.00

E3Z-B retro-reflective sensor tuned for clear PET bottle detection, 500 mm with E39-R1S, NPN, pre-wired 2 m cable, IP67.

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Product Overview

The Omron E3Z-B61 2M is a compact retro-reflective photoelectric sensor tuned to detect clear PET bottles and other thin transparent objects that a standard retro sensor would miss. It is manufactured by Omron Corporation. Hengyixin Automation ships this sensor from our Xiamen warehouse with a 30-day DOA return window and a datasheet PDF included in the box.

500 mm sensing distance with E39-R1S reflector NPN open-collector output, 100 mA at 26.4 VDC max. 12-24 VDC ±10 % supply, 30 mA current draw Pre-wired 2 m oil-resistant PVC cable

Key specs: Sensing Method Retro-reflective (with E39-R1S reflector); Sensing Distance 500 mm with E39-R1S reflector; Light Source Red LED, 660 nm; Standard Target Clear PET bottle, 50 mm minimum diameter; Supply Voltage 12-24 VDC ±10 %, ripple 10 % p-p max.; Current Consumption 30 mA max.; Output NPN open collector, Light-ON / Dark-ON selectable, 100 mA; Response Time 1 ms operate / 1 ms release.

Key Features

  • 500 mm sensing distance with E39-R1S reflector
  • NPN open-collector output, 100 mA at 26.4 VDC max.
  • 12-24 VDC ±10 % supply, 30 mA current draw
  • Pre-wired 2 m oil-resistant PVC cable
  • SKU: E3Z-B61 2M
  • Series: E3Z-B clear-PET retro-reflective sensor
  • Voltage: 12-24 VDC

Best-Fit Applications

  • Clear PET bottle counting and position check on a bottling line
  • Trigger signal before a fill or cap station for clear bottles
  • Glass jar inspection at a low-speed packaging infeed

Buying Checklist

  • Choose E3Z-T81 for a long-distance through-beam pair on a wider line.
  • Choose E3Z-B61 2M for NPN output and a pre-wired 2 m cable.
  • Choose E3Z-D62 2M for 1 m diffuse-reflective if a reflector is not workable.

Technical Specifications

Series E3Z-B clear-PET retro-reflective sensor
Sensing Method Retro-reflective (with E39-R1S reflector)
Sensing Distance 500 mm with E39-R1S reflector
Light Source Red LED, 660 nm
Standard Target Clear PET bottle, 50 mm minimum diameter
Supply Voltage 12-24 VDC ±10 %, ripple 10 % p-p max.
Current Consumption 30 mA max.
Output NPN open collector, Light-ON / Dark-ON selectable, 100 mA
Response Time 1 ms operate / 1 ms release
Connection Pre-wired oil-resistant PVC cable, 2 m
Operating Temperature -25 to +55 °C (no condensation or icing)
Protection Rating IEC IP67

FAQ for E3Z-B61 2M

What is the difference between E3Z-B61 2M and E3Z-B86?
Both are the same E3Z-B clear-PET sensor with a 500 mm range on the E39-R1S reflector. E3Z-B61 2M is the NPN pre-wired 2 m version. E3Z-B86 is the PNP M8 4-pin connector version. Pick the B61 2M for direct panel wiring and an NPN sinking input; pick the B86 for a sourcing PLC input and a quick-disconnect patch cord.
Why is the E3Z-B special for PET bottles?
A standard retro-reflective sensor relies on the target blocking the beam from the reflector. A clear PET wall lets most of the light through, so a standard retro treats it as 'no object'. The E3Z-B uses a special optical filter and threshold that responds to the small refractive change at the bottle wall, so it consistently detects a clear PET bottle without being fooled by the reflector behind it.
What reflector does the E3Z-B61 2M need?
Use the standard E39-R1S reflector (or E39-R1) for a 500 mm range. The 'B' series is factory-tuned against the standard E39-R1S spectral response. Allow at least 100 mm between the sensor and the reflector for stable PET detection, and clean the reflector face on the same schedule as the line belt to avoid false drops from contamination.

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