What’s the vacuum sight glass

Vacuum observation window, also called vacuum sight glass, is an optical Feedthrough, usually used to monitor the internal production of vacuum container (such as temperature observation, test material status, etc.) or transmission light source, glass material used to monitor the internal production of vacuum can be ordinary glass or transparent plexiglass plate, Optical glass (quartz glass or sapphire glass, etc.) is used for transmitting light source.
According to the different glass and flange sealing methods, observation Windows can be divided into disassembly type and non-disassembly type. Disassembly vacuum observation Windows are usually sealed with glass and flanged fluororubber O-ring, which can withstand the maximum baking temperature of 150°C. Flange type is usually ISO-F type, mainly used in high vacuum or coarse vacuum field. Non-detachable vacuum observation window adopts glass and metal sealing technology, which can withstand high-temperature baking of 300℃ ~ 450℃. There are usually two types of flanges, one is CF type, which is mainly used in ultra-high vacuum field, and the other is KF type, which is mainly used in high vacuum or coarse vacuum field.


Post time: May-18-2022