Some of the trackers and cameras covered on this web site have quoted IPX waterproof standards. Some of the advertising pictures can be a little misleading so here is what the standards mean:
No special protection
Protected against falling water
Equivalent to 3-5mm rainfall per minute for a duration of 10 minutes. Unit is placed in its normal operating position.
Protected against falling water when tilted up to 15 degrees
Same as IPX-1 but unit is tested in 4 fixed positions – tilted 15 degrees in each direction from normal operating position.
Protected against spraying water
Water spraying up to 60 degrees from vertical at 10 liters/min at a pressure of 80-100kN/m2 for 5 min.
Protected against splashing water
Same as IPX-3 but water is sprayed at all angles.
Protected against water jets
Water projected at all angles through a 6.3mm nozzle at a flow rate of 12.5 liters/min at a pressure of 30kN/m2 for 3 minutes from a distance of 3 meters.
Protected against heavy seas
Water projected at all angles through a 12.5mm nozzle at a flow rate of 100 liters/min at a pressure of 100kN/m2 for 3 minutes from a distance of 3 meters.
Protected against water immersion
Immersion for 30 minutes at a depth of 1 meter.
Protected against water submersion
The equipment is suitable for continual submersion in water under conditions which are identified by the manufacturer.
Source : http://www.sourcingchinaproducts.com/blog/product-regulation/ipx-waterproof-specifications/
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