MIL-STD 810 Immersion Standard, Military Specification equipment
MIL-STD 810 Blowing Rain, Military Specification equipment
JIS 2-8 Japanese Water Protection Specs similar to IEC529
CFR Title 46 Part 110.15 Aircraft Civilian specifications
IEC 529 European (ECC) water protection specifications
Of these, only IEC 529 (European Community Specification) and JIS2-8 (Japanese Industry Standard) have graduated test levels. These two specifications are very similar, but IEC 529 is gaining more acceptance in Europe which is a major market for many US manufacturers and is more defined in terms of the actual test. The table below gives a summary of the requirements for IEC 529 for WATER PROTECTION PROVISIONS.
Test
Level Definition
0 Non
protected, No special protection
1 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.
2 Protected
against falling water when tilted up to 15 degrees. Same as
(1) above but unit is tested
in 4 fixed positions - tilted 15 degree in each direction from normal operating
position.
3 Protected against spraying
water, Water spraying up to 60 degrees from vertical at 10
liters/min at
a gage pressure of 80-100kN/m2 for 5 min.
4 Protected against splashing
water. Same as level 3 but water is sprayed
at all angles.
5 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 gage pressure of 30kN/m2 for 3 minutes from a distance
of 3 meters.
6 Protected against heavy seas.
Water projected at all angles through a 12.5mm nozzle at a flow rate
of 100 liters/min at a gage pressure of 100kN/m2 for 3 minutes from a distance
of 3 meters.
7 Protected against water immersion.
Immersion for 30 minutes at a depth of 1 meter.
8 Protected against water submersion
The equipment is suitable for continuos submersion in water
under conditions which are identified by the manufacturer.
*Note: IEC 529 level 7 is designated "IPX7" and is equivalent to
JIS 7. The position of "X" being left blank indicates that the unit
has no special mechanical protection.
*Note: Garmin typically uses the IEC-529 spec for the design
spec for water protection level for their line of GPS equipment.
Marine rated GPS equipment is usually tested to IPX7.
Lowrance uses different methodology which are non standard but is roughly equivalent to IPX7 but at 2ft depth for 1 hour . Magellan's immersion standards are not known to us at this time.