VPF Series cryostats — sample in vacuum

  • Cooling type LN2
  • Minimum temperature: 65 K to 77 K (temperatures below 77 K with optional pumping manifold)
  • Maximum temperature: 800 K
  • Sample environment: Vacuum
  • Sample environment: Vacuum
  • Cooldown: 15 min (to 77 K)
  • Typical stability: ±50 mK (measured with temperature controller)
  • LN2 hold time (77 K): VPF-100: 8 h; VPF-100H: 5 h
  • LN2 hold time (100 K): 4.5 h
  • LN2 hold time (200 K): 2.5 h
  • Vacuum level required: 10-4 Torr (vacuum pressure measured at room temperature prior to adding cryogens)
  • Approximate weight: 7 lb (3.3 kg)

The VPF cryostat is an inexpensive liquid nitrogen cryostat offering operating temperatures from 65 K to 800 K. Simple to use and refill, the VPF system uses a refill-style displacer assembly and built-in heater to provide variable temperature capability. Temperatures below 77 K are achieved using an optional pumping manifold. High-temperature capability is provided using special sensors and heaters.

Optional window materials can be installed to span the far/mid- IR, VUV, and x-ray regions for a variety of spectroscopic measurements. The refill assembly permits the refilling of the LN2 reservoir without affecting the controlled temperature.

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