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email: vacuum.cnmarketing@agilent.com, Toll free: 800 820 3278, Tel. +86 (0)10 64397888
安捷伦真空部门，以前的瓦里安真空，是一个国际知名的真空设备供应商。可以提供真空泵、检漏仪、真空元件、真空附件等一系列的真空获得、真空控制和真空测量设备。上世纪50年代发明离子泵使人类第一次获得了超高真空开始，我们一直走在真空技术的最前沿，离子泵之后，我们对扩散泵和检漏技术做出了重大发展，在分子泵和干泵技术上做出了重要改进，直到最近，开发出了革命性的 TwisTorr FS分子泵和IDP系列干泵。
- Rotary vane and dry pumps can produce ultimate pressures of 10-2 to 10-3 mbar, though the ultimate achievable vacuum may be reduced by factors such as big gas loads. Yet many processes, including ones with significant gas loads, require pressures even lower than 10-3 mbar.
- For such applications, high and ultra-high vacuum devices such as vapour diffusion pumps, turbomolecular pumps or cryopumps are required. Because of the enormous pressure differentials involved, these pumps cannot exhaust directly to atmosphere. Therefore, a backing pump - typically a rotary vane or rotary-booster combination - must be used in conjunction with these pumps.
- In a diffusion pump, a suitable fluid is vaporised in the boiler of the pump at 200-250oC and the vapour is sprayed into the pump through high velocity jets incorporated in the interior of the pump. Gas entering the inlet of the pump is diffused in the vapour stream and transferred to the outlet of the pump. The vaporised fluid is condensed and returned to the boiler where the cycle is repeated.
- Edwards has the most comprehensive range of vapour pumps and accessories of any supplier, including a dedicated series for CRT applications.
