BJX Series - Compact Long Distance Photoelectric Sensors

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BJX Series Compact Long Distance Photoelectric Sensors

The BJX series compact photoelectric sensors feature high performance lens with long sensing distance up to 30 m. The sensors also offer excellent noise immunity and minimal influence from ambient light for accurate and reliable presence detection. Mutual interference prevention function allows tight adjacent installation of multiple sensors and MSR (mirror surface rejection) function allows detection of highly reflective targets.

compact size Dark ON diffuse reflective Light ON long sensing distance MSR retroreflective sensitivity adjuster through-beam

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Applications

Printing Machines

Photoelectric sensors used to detect the amount of paper loaded on the tray of industrial printing machines.

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High performance lens with long sensing distance
- Through-beam type: 30 m
- Diffuse reflective type: 1 m
- Retroreflective type: 3 m (MS-2A)
Compact size: W 20 x H 32 x L 11 mm
M.S.R (Mirror Surface Rejection) function (retroreflective type)
Light ON/Dark ON operation mode switch
Sensitivity adjuster
Built-in reverse polarity protection circuit and output overcurrent (short-circuit) protection circuit
Mutual interference prevention function (except through-beam type)
Excellent noise immunity and minimal influence from ambient light
IP65 protection structure (IEC standard) (patent) *

Korea Patent Registration 10-1409233

Long Sensing Distance
Mirror Surface Rejection (MSR)
Operation Mode Switch
Improved Noise Immunity

Long Sensing Distance Up to 30 m

The BJX series feature up to 2X longer sensing distance compared to BJ series models, with detection distances up to 30 m.

Through-beam type: 30 m / Diffuse reflective type: 1m / Retroreflective type: 3 m (MS-2A)

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Mirror Surface Rejection (MSR) Function (Retroreflective Type)

The retroreflective type models feature built-in polarizing filters allowing the units to only receive light from reflectors. This function allows stable detection of highly reflective targets including metals, mirrors, etc.

The Working Principle of Mirror Surface Rejection (MSR) Function

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The light passed through the polarizing filter on the emitter will become horizontal. The light reflected on the retroreflective mirror will turn 90˚ and the vertical light will be received by receiver through vertical polarizing filter.
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The light reflected from reflective targets will remain horizontal, and thus will not be received by the receiver with the vertical polarizing filter.

Mutual Interference Prevention Function (Except Through-Beam Type)

The emitting cycle of the sensors can be changed which allows multiple sensors to be installed close to each other without affecting the other nearby sensors.

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Excellent Noise Immunity and Minimal Influence from Ambient Light

Improved noise immunity by using digital filters with noise evasion algorithm. Minimal influence from ambient light with ambient light prevention algorithm.