The Omron E3Z-B82 is a retro-reflective photoelectric sensor from the E3Z-B series, designed for object detection in industrial automation lines. Its key differentiator: it omits the M.S.R. (Mutual Interference Rejection) function, meaning it is the correct choice when only one sensor occupies a given optical axis and no cross-talk risk exists between adjacent units.
Sensing distance and what M.S.R. means
As a retro-reflective type, the E3Z-B82 detects objects that break a light beam between the sensor and a separate reflector. The sensing distance is set by the reflector and the optical design — typical retro-reflective sensors in this class reach several meters, but the exact distance depends on the reflector used and the target's reflectivity. The absence of M.S.R. means this sensor does not modulate its emitter to reject interference from a second nearby sensor; install it where only one unit covers the detection zone, or where beam overlap is not a concern.
Wiring and integration
The E3Z-B82 uses a standard M8 or M12 connector (verify the specific variant for your order code). Wiring follows the typical 3- or 4-wire DC configuration: brown to +24 VDC, blue to 0 V, black for NPN or PNP output depending on the model. The absence of M.S.R. simplifies wiring — no synchronization line needed between sensors.