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Sensors that remain reliable and impermeable over their entire service life.
Baumer sensors were developed to guarantee outstanding impermeability over their entire service life. While sensors in other impermeability tests are only tested for their water impermeability when new, the proTect+ testing process first simulates the effects of aging on the sensors. After aging, the sensors are subjected to impermeability tests in accordance with the specific IP protection class guidelines in order to guarantee impermeability.
Benefits to you
Optimized impermeability design
Design guidelines applied to ensure long-term impermeability
Sensor housing made of materials selected for high durability
Optimized mechanical connections Result: High process reliability even in critical areas
Sophisticated verification through intensive tests
Temperature shock tested in water and air over a wide temperature range
Tested according to the highest IP requirements: IP x8 and IP x9 Maximum reliability
Increased sensor service life
Reliable even when used in outdoor, hygienic and washdown applications
Resistant to aggressive cleaning agents Functional reliability even in extreme ambient conditions
Maximum machine availability
Unplanned downtime is prevented by using sensors that have been tested against an advanced stress & aging simulation
Minimal maintenance due to long-term impermeable sensors, even in the most demanding production environments Sensors impermeable for the long term
Our portfolio of sensors that are impermeable for the long term according to proTect+:
O300 / O500 and Series 14 photoelectric sensors in stainless steel housings – the standard with extra power for your application.
proTect+ is an impermeability concept developed by Baumer which ensures the long-term functionality of the sensor even under the most demanding conditions. In order to guarantee the special impermeability of the sensors, great importance is attached to the selection of the right materials as well as the optimisation of the design during development. Extensive stress tests according to the proTect+ guidelines then check the long-term impermeability of the sensors.
First, the test sensors are subjected to either water temperature or air temperature shock tests to simulate aging effects and thus the life cycle of a sensor in the machine. Each sensor has to go through a total of 50 temperature cycles. Then the tests in accordance with the IP x8 and IP x9 protection classes are implemented.
Materials such as V4A/V2A stainless steel, chemically nickel-plated heat-treated steel, NBR, liquid silicone rubber, polyamide and others are used to ensure special impermeability in accordance with proTect+. In addition, smooth and impermeable surfaces prevent dirt and bacteria from adhering to sensors with the hygienic design, allowing simple and thorough cleaning of the sensor.
Mechanical interfaces are designed in a way that even at critical points, such as cable outlets or LED switching status indicators, absolute impermeability is ensured even with foam or high-pressure cleaning.
proTect+ test series
In order to guarantee absolute impermeability, the sensors are subjected to extensive stress tests. The following test procedures are performed:
Air temperature cycle test
Temperature shock in air over the entire temperature range of the sensor with 50 temperature cycles.
Water temperature cycle test
Temperature shock test in water over the entire temperature range of the sensor to at least +85°C. Temperature change within seconds.
The sensors are placed under water at a depth of one meter for 168 hours
Sensors with proTect+ are particularly suitable for harsh industrial environments, most notably in outdoor, hygienic and washdown applications where the sensors are exposed to repeated cleaning cycles and aggressive chemicals. Once you use them, these sensors will quickly convince you of their reliability and impermeability in challenging applications.