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Question
Are Photoelectric Sensors that can be used in locations subject to water available?
Answer
Using models that provide an IP67 degree of protection is recommended.
Explanation:
Items with an IP67 degree of protection satisfy the level of protection defined by IEC standard 60529 as shown in the following figures.
| Level | Degree of protection | Test method | |
| IP67 | Protection against immersion in water  | Water will not penetrate the item if it is immersed in water at the specified pressure and for the specified time. | Immersion to a depth of 1 m for 30 min.  |
Typical models that provide IP67 protection are E3Z Series Photoelectric Sensors, E3S-A/B Series, and E32 Series.
For details, refer to Sensors Catalog. Be sure, however, to heed the following precautions.
1.Malfunction may occur if there is water on the lens surface. (Through-beam Sensors and Retroreflective Sensors may incorrectly detect light interruption. Diffuse-reflective Sensors may incorrectly detect light incidence, and the sensing distance will decrease.)
2.Photoelectric Sensors cannot be used if the case or lens is immersed in oil. E3S-C Series with IP67g protection (oil-resistant construction) is recommended for use in locations subject to oil.
Recommended Products
E2E
Standard Sensors for Detecting Ferrous Metals under Standard Conditions
E32 Series
OMRON's Fiber Sensors continue to support an increasing range of applications.
FZ2 Series
Real color sensors equipped with 2-million-pixel CCDs, the fastest in the industry. Nine different types of cameras are available.
Other Photoelectric Sensors FAQ
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Can a Photoelectric Sensor with an Optical Fiber be used in an explosion-proof area?
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What's the difference between a Reflective Fiber Unit and a Coaxial Reflective Fiber Unit?
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Our Photoelectric Sensors malfunction when the power supply of an inverter motor or other equipment is switched ON or OFF.
What's causing this, and what can we do to resolve it?
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