|1st number : protection against ingress of solid objects|
|1||Protected against solid objects of 50 mm (1.968) and greater|
|2||Protected against solid objects of 12.5 mm (.492) and greater|
|3||Protected against solid objects of 2.5 mm (.098) and greater|
|4||Protected against solid objects of 1 mm (.039) and greater|
|5||Dust-protected (no harmful ingress)|
|6||Dust-tight (no ingress)|
|2nd number : protection against liquids|
|1||Protected against vertically falling water drops|
|2||Protected against vertically falling water drops when enclosure tilted up to 15°|
|3||Protected against water sprayed vertically at an angle up to 60°|
|4||Protected against splashing water|
|5||Protected against water jets from any direction|
|6||Protected against powerful water jets|
|7||Protected against the effects of temporary immersion in water|
|8||Protected against the effects of continuous immersion in water (depth x to be specified)|
|IP69K||IP69K test according to DIN 40050 / part 9
The goal of this test is to simulate pressure cleaning conditions on a plant floor. In the test fixture, the switches were exposed to a water jet of 80 - 100 bar at a temperature of 80 °C.
The duration of each cleaning cycle was 30 seconds. The test was performed with a spray nozzle located at defined angles and at a distance of 10 - 15 cm from the sensor.
The high protection rating guarantees absolute ingress-resistance, even in applications subject to frequent cleaning processes, e.g. in the food industry.