White Paper: HP Drives Industry Standards for Rugged Computing
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...-STD 810F, Method 500.4, Procedure I : First, unit is placed in a vacuum chamber at room temperature and held at PSIG of 2 digits, each signifying a separate component. The IP number is subjected to dust and then to water splashing. The higher the number, the better the protection. 1st digit: 5-Protected against...hour at +60°C for a series of up tests. For example, in the rating IP44 the first digit refers to the protection against solid objects such as dust, and the second digit refers to operate at 0°C, then powered up and the display checked for visibility and unit ...
...-STD 810F, Method 500.4, Procedure I : First, unit is placed in a vacuum chamber at room temperature and held at PSIG of 2 digits, each signifying a separate component. The IP number is subjected to dust and then to water splashing. The higher the number, the better the protection. 1st digit: 5-Protected against...hour at +60°C for a series of up tests. For example, in the rating IP44 the first digit refers to the protection against solid objects such as dust, and the second digit refers to operate at 0°C, then powered up and the display checked for visibility and unit ...