Available in 2 in. and 16 in. through 35 in. sizes, the low-cost HS-series pumps provide high speed, low ultimate pressure, high throughput, high tolerable forepressure, and low backstreaming. The HS-Series diffusion pumps come with full thermal protection and optional quick-cool coils. The 16 in. through 35 in. pumps come with sight glass/fill and drain assemblies, and are available with ASA or ISO flanges.
Ordering Information:
| K0377159 | O-ring kit, for HS-2, M-2, and HSA-150 diffusion pumps |
| 82906301 | HS-2 diffusion pump, with standard cold cap, 120 V, ASA flange |
| 82906302 | HS-2 diffusion pump, with standard cold cap, 240 V, ASA flange |
| 82918301 | Heater platen, for HS-2 diffusion pump |
| 82920001 | Heater block, HS-2 diffusion pump |
| 647302125 | Heater, HS-2 diffusion pump, 450 W, 120 V |
| 647302150 | Heater, HS-2 diffusion pump, 450 W, 240 V, single phase |
Technical Specifications
| Pumping speed, operating range Pumping speed, AVS 4.1 (1963) | 160 l/s air, 200 l/s He and H2 285 l/s air |
| Maximum Throughput | 0.60 T-l/s (0.80 mbar-l/s) in operating range, 0.70 T-l/s (0.93 mbar-l/s) @ 0.01 Torr |
| Operating Range | 3.7 x 10-3 to < 5 x 10-8 Torr, (4.9 x 10-3 to < 6.5 10-8 mbar) |
| Maximum Forepressure | No load: 0.55 Torr (0.71 mbar) Full load: 0.40 Torr (0.52 mbar) |
| Recommended Backing Pump | ≥ 5 cfm (8.5 m3/hr) |
| Backstreaming Rate, Standard Cold Cap | < 1 x 10-3 mg/cm2/min |
| Warmup Time | 15 minutes |
| Cooldown Time | 10 minutes (with quick cool coil) |
| Fluid Charge | 100 cc |
| Electrical Requirements | 1 ph, 50/60 Hz, 120/240 VAC |
| Pump Power | 450 watts |
| Cooling Water Requirements | 0.1 gpm (20 l/hr) at 60-80 °F (15-26 °C) |
| Water Connections | ⅛ in. FPT |
Outline Drawing
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