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BJR Series - Oil-Resistant/Oil-Proof Photoelectric Sensors
BJR Series Oil-Resistant/Oil-Proof Photoelectric Sensors
The BJR series oil-resistant/oil-proof photoelectric sensors are optimized for use in various environments with cutting oil and lubricants such as automotive and machine tool industries. The sensors are capable of long distance detection up to 15 m (through-beam type). Various features including MSR (Mirror Surface Rejection) function and mutual interference prevention functions allow stable and error-free operation. The screw mounting hole is made of metallic nuts, allowing easy installation using M3 bolts and offering easy maintenance even when exposed to various oils.
Main features
- For use in oil environments such as cutting oil or lubricants (optimized for automotive and machine tool industries)
BJR (oil-resistant type): special coating prevents oil (oil drop/powder) from penetrating into the product
BJR-F (oil-proof type): operates normally even when oil (oil drop/powder) penetrates into the product - Long sensing distance:
- Through-beam type: 15 m,
- Diffuse reflective type: 1 m
- Retroreflective type: 3 m (MS-2S) - MSR (Mirror Surface Rejection) function (retroreflective type)
- Compact size: W 20 x H 32 x L 11 mm
- 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
- BJR series (Oil-resistant type)
Protection structure: IP67, IP67G - BJR-F series (Oil-proof type)
Protection structure: IP67, IP67F
For Use in Oil Environments
Long Sensing Distance
Detect Reflective Targets (Retroreflective Type)
Simple Operation Mode Switching
Excellent Noise Immunity
Protection Rating
Optimized for Automotive and Machine Tool Industries
The BJR series oil-resistant/oil-proof photoelectric sensors are optimized for use in various environments with cutting oil and lubricants such as automotive and machine tool industries.
Oil-resistant type: special coating prevents oil (oil drop/powder) from penetrating into the product
Oil-proof type: operates normally even when oil (oil drop/powder) penetrates into the product
BJR Series Oil-Resistance/Oil-Proof Test Results
The product has passed oil resistance tests for IP67G and IP67F protection rating (JEM standard). Oil-resistance may be affected by certain types of oil. Refer to the following table when considering oil types.
| Oil Type | Product Name | Kinematic Viscosity (mm²/s, 40˚C) | pH |
|---|---|---|---|
| Lubricant | Velocite Oil No.3 | 2 | - |
| Water-insoluble cutting oil | Tectyl Cut 527 | 27 | - |
| Water-soluble cutting oil | Tectyl Cool 263C | - | 9.5 (10% solution) |
The sensor was dipped in the above oils for 240 hours for testing.
- IP67G oil-resistant protection structure (BJR) : special coating prevents oil from penetrating into the product
- IP67F oil-proof protection structure (BJR-F): operates normally even when oil (oil drop/powder) penetrates into the product
Various Connection Types Available
The BJR series is available in connector type, cable type, and cable connector types, allowing easy application in various user environments.
Oil-resistant type models are available in cable type and cable connector types only.
Long Sensing Distance Up to 15 m
Through-beam type models feature long sensing distances up to 15 m.
Sensing distance: retroreflective type 3 m / diffuse reflective type: 1 m
M.S.R (Mirror Surface Rejection) Function (Retroreflective Type)
The retroreflective type models feature MSR (Mirror Surface Rejection) function which allow the units to only receive light from specific mirrors (MS-2S). This function allows stable detection of highly reflective targets including metals, mirrors, etc.
The Working Principle of Mirror Surface Rejection (MSR) Function
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.
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Mutual Interference Prevention Function (Except Through-Beam Types)
The emitter cycles can be configured so that the sensors will not be affected by other nearby sensors. This allows adjacent installation of multiple sensors.
Excellent Noise Immunity and Minimal Influence from Ambient Light
The sensors feature noise reduction algorithm and digital filters, offering excellent noise immunity and minimal influence from ambient light.
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IP67, IP67G, IP67F Protection Structure
IP67 protection structure allows the units to be safely applied in environments with dust or water. IP67G, IP67F protection structure allows stable and error-free operation even in oily environments.
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PR materials
Technical data
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