二手 VARIAN VHS-6 #9198433 待售

Diffusion pump, 4"-16" Highest pumping speed Fluid-level sight glass provides a quick indication of pump Fill and drain assembly for pump oil Fractionating jet purifies pumping fluid High tolerable forepressure Full thermal protection Stainless steel pump body and jet Finned boiler increases surface area, prolonging pumping fluid life Technical specifications: Operating range pumping speed, AVS 4.1 (1963): 1,550 l/s Air, 1,930 l/s He/H2 2,400 l/s Air Maximum throughput: 2.4 T-l/s (3.2 mbar-l/s) in operating range, 3.5 T-l/s (4.5 mbar-l/s) @ 0.01 torr Operating range: 1.5 x 10-3 to <5 x 10-9 torr (2 x 10-3 to < 6.5 x 10-9 mbar) Maximum forepressure: No Load: 0.65 torr (0.85 mbar) Full Load: 0.55 torr (0.72 mbar) Recommended backing pump: ≥17 cfm (29 m3/hr) Backstreaming rate, standard cold cap: <5 x 10-4 mg/cm2/min Warmup time: 10 minutes Cooldown time: 10 minutes (with quick cool coil) Fluid charge: 500 cc – exact fluid charge available Electrical requirements: 1 ph, 50/60 Hz, 120/208/240 VAC Pump power: 2200V Cooling water requirements: 0.25 gpm (50 l/hr) at 60-80°F (15-26°C) Water connections: 1⁄8 in. FPT Tee.