Here we introduce the following important parameters, which any end user can refer to based on detail process needs :
1.Because of the technical capacity constraints, most of the moisture-proof cabinet manufacturers offer products in both the rate of dehumidification is quite slow, a few can make it within 1 ~ 2 hours, the most may only reach even half a day, so this is the case, even humidity inside cabinet can be dropped to the setting. but it still ha long recovery time that no way to meet most industrial users requirement on frequent access to materials.
(Friendly recommend:CBI ADH series reach recovery time as fast as 5 ~ 15 minutes even with loaded )
2. Static dissipative coating
low humidity environment easy generate ESD problem that is one of key sensitive facts for MSD concern as it generally require a very high ESD protection during storage and assembling. For dry cabinet you chose specially below 20% Rh level, you need to pay attention on:
1). Surface resistivity rate, resistor to ground even decay time which you need to measure on any points of inside even outside of cabinet to meet ESD/EOS standard.
2). Does it have Rosh verify?
3). For EMS or other relative production fields, try to use ESD dissipative level not conductive (< 10 6ohom) regarding to control decay time .
3. Humidity control
This issue relates to fluctuations( recommend <2%), indicating deviation (recommend <+ / -3%), uniformity (recommend <3%), dynamic tracking of (recommend <2%) and other parameters . In the selection and acceptance period, end users shall pay attention on these specification in order to ensure cabinet you have provide a safety and reliable environment for your MSD kept in.
4. Nspection and testing.
because of dry cabinets demanding growth quickly in industries fields in past few years, but since there’s no such standard till now for manufacturers to follow, so technology and performance even quality from individual suppliers may have bigger difference. Also most home used cabinet are also entered in to industries market, as these disadvantages mentioned above, end users need to have own applications requirement to have right chose. third party or in-house testing are necessary as condition of acceptance. It is important to mention here that accuracy and measuring range of humidity meter you have shall have a higher spec. than your cabinet level. |
