Mobile units are supplied with support wheels or casters. Caster size and spacing determines the ease of mobility and stability, making it easier to shuttle within your facility. The wide stance of the cart wheels and a sturdy design offer stability when moving the unit around the work place.
The size of the liquid nitrogen bath determines the amount of liquid nitrogen required for cool down prior to operation. The selection of the media sieve (adsorbent) determines the efficiency of the system and time required before regeneration. The resultant helium dewpoint is -80°F (-62°C).
An inlet molecular sieve dryer can be regenerated in an oven and helps eliminates any freeze out on the heat exchanger. Integral regenerative heaters are used to regenerate the adsorption media sieve. Consider selecting a unit where the integral heater can be replaced without disassembly.
Operational efficiency and reliability is improved by insulating the adsorber assembly. This sometimes is accomplished with a static vacuum insulation.
Some units offer setup with quick connections on either side of a bypass valve. Flexible hose connections make quick connections easy. Some models are supplied with adapters that need to be installed in the process helium line, on either side of a bypass valve, prior to connecting the purifier.
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