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FSH 63-B-R, viewport shutter with rigid shutter blade on DN63-flange
and feedthrough position right |
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- Compatible with all UHV systems
- Double-sided CF flange
- Flange sizes DN63 CF, DN100 CF
- Right-angle swing type shutter
- Perfect view into UHV chamber due to 90° shutter opening
- Actuated with rotary feedthrough
- Magnetically coupled rotary feedthrough on request
- Two different shutter blade design options
- Bakeable up to 250°C
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The Viewport Shutters FSH are high-quality swing
shutters used to cover and protect all kinds of viewports in UHV systems.
The well designed swing shutters allow perfect shielding of the viewport, while providing an unobstructed view into the UHV chamber, when completely opended by 90°.
All FSH viewport shutters are actuated by rotary motion feedthroughs with welded bellows-sealing and position lock. Alternatively a magnetically coupled feedthrough is available on request.
FSH viewport shutters can be easily retrofitted between viewport and respective chamber flange due to double-sided CF flanges.
The range of FSH viewport shutters comprises two design options, as shown in the figures on the right hand side.
Design option A features a flexible shutter blade, that flexes and blends into the tube I.D. of the chamber port. Scratching along the tube's inner wall is prevented by small spacers. This design implements the largest achievable viewing diameter in conjunction with good shielding of the window.
Design option B carries a rigid shutter blade. The shutter blade can be opened 90° into the port tube. In closed position the blade overlaps on its circumference with the fixed aperture plate, thus providing a 100% optically tight shielding. The viewing area, howewer, is reduced in comparison with design A. |
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FSH 100-A-L with flexible shutter blade in opened position
FSH 100-B-L with DN100CF window attached (blade half opened) |
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