Kodial Zero Length Viewports With X-Ray Protection Lead Glass
VacTechniche Vacuum Optics – Viewports
Kodial Zero Length Viewports With X-Ray Protection Lead Glass
VacTechniche CF kodial viewports are offered including an additional 6mm thick lead glass disc clipped in to the atmosphere side of the kodial window for X-Ray protection. The viewports comprise a borosilicate glass optic which is sealed to a kovar weld ring using an induction heater process.
Description
The optic assemblies are TIG welded into the anges and are helium leak tested and cleaned for ultra high vacuum (UHV) conditions. The CF versions are offered using 304L or 316LN stainless steel anges. The rugged construction of the Kodial viewports allows repeated bake-out with UHV performance. The kodial/lead glass window assembly provides visible. Transmission as shown in the graph below.
Transmission Curve – Kodial
Specifications
| Seal Type of the glass viewport only | Induction (note, the lead glass is an additional disc clipped in to the viewport) |
| Maximum Temperature | 350°C |
| Minimum Temperature | minus 20°C |
| Maximum Rate of Temperature Change | 3°C per minute |
| Leak Rate | <1×10-10 atm-cc/sec (He) |
| Pressure range | 1 bar to 1×10-11 mbar |
Cross Sections / Diagrams
Parts & Variations
| Part Number | Flange Type | OD mm | View Diameter mm | Optic Thickness mm | Lead Glass Thickness mm | Flange Material | Weld Ring Material |
| VPZ16LG | NW16CF | 34 | 15 | 1 | 6 | 304L | Kovar |
| VPZ16LG-LN | NW16CF | 34 | 15 | 1 | 6 | 316LN | Kovar |
| VPZ38LG | NW35CF | 70 | 32 | 2.5 | 6 | 304L | Kovar |
| VPZ38LG-LN | NW35CF | 70 | 32 | 2.5 | 6 | 316LN | Kovar |
| VPZ64LG | NW63CF | 114 | 63 | 3 | 6 | 304L | Kovar |
| VPZ64LG-LN | NW63CF | 114 | 63 | 3 | 6 | 316LN | Kovar |
| VPZ100LG | NW100CF | 152 | 89 | 4 | 6 | 304L | Kovar |
| VPZ100LG-LN | NW100CF | 152 | 89 | 4 | 6 | 316LN | Kovar |
| VPZ150LG | NW150CF | 203 | 136 | 6.5 | 6 | 304L | Kovar |
| VPZ150LG-LN | NW150CF | 203 | 136 | 6.5 | 6 | 316LN | Kovar |
Related products
Viewports
Viewports
Viewports
Viewports
