1.1 This practice establishes procedures for the hosedown of a membrane switch to verify adequate protection from ingress of water from a high-volume water spray.
1.2 This practice can also be used to verify the ability of a membrane switch or graphics layer to act as a liquid seal for a finished product.
1.3 Additional test methods or practices can be incorporated to investigate specific results or capabilities.
1.4 This practice is a modification of NEMA Publication Number 250-1991 Section 6.7 which is a test for hosedown of a finished product housing.
The presence of water inside a membrane switch can affect its mechanical operation or electrical functionality, or both.
This practice establishes a procedure to verify the ability of a membrane switch to resist the entry of liquid into itself or a finished product, or both. It is useful in identifying design deficiencies.
Hosedown testing may be destructive, therefore any samples tested should be considered unfit for future use.
SDO | ASTM: ASTM International |
Document Number | F2072 |
Publication Date | Feb. 1, 2007 |
Language | en - English |
Page Count | 2 |
Revision Level | 01(2007) |
Supercedes | |
Committee | F01.18 |