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.
Test conditions
Test with fan nozzle
Test unit on turntable (5 revolutions/minute)
Spray angles 0°, 30°, 60° and 90°
Distance of nozzle to test unit 100 - 150 mm
Spray quantity 14 to 16 litres/min.
Water pressure about 8,000 - 10,000 kPa at +(80 +/- 5)°C with a duration of 30 seconds per position
Water aimed at the housing with increased pressure from each direction must not have any damaging effect.
Implementation of the test
Before and after each test a function check was carried out and the current
consumption was recorded. First the steam jet test was carried out on all units
at + 80°C water temperature and then a function check was made. For the function
check a voltage of 13VDC was applied to the test units. A low-load relay
was connected to the output and the load current was measured. A prismatic
reflector was used to generate the signals.
ifm offers photoelectric sensors (OG wetline) as well as inductive proximity
switches (efector m T series) with IP69k.
IP69K test according to DIN 40050 / part 9