VNF Series cryostats—sample in flowing vapor
VNF Series features
- 65 K to 325 K
- Uses LN2
- Sample-in-flowing-vapor
The Lake Shore VNF cryostat is an inexpensive liquid nitrogen cryostat offering operating temperatures from 65 K to 325 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.
| VNF part number | Optical | Maximum temperature |
| VNF-100 | ✔ | 325 K |
| VNF-100T | 325 K |
| Cooling type | LN2 |
| Minimum temperature | 65 K to 77 K (temperatures below 77 K with optional pumping manifold) |
| Maximum temperature | 325 K |
| Sample environment | Flowing vapor |
| Cooldown | 30 min (to 77 K) |
| Sample change time | <10 min |
| Typical stability | ±50 mK (measured with temperature controller) |
| LN2 capacity | 1.2 L |
| Working time (typical) | 6 h to 8 h |
| Initial cooldown time (from room temperature) | Approximately 30 min |
| Approximate weight | 19 lb (11.5 kg) |