Q01.3-LQ-1J-LN2

QUANTUM Nitrogen Liquefier

Features:

• 40 L/day nominal capacity
• Reliable
• Convenient: requires only electrical power and compressed air.
• Easy to operate; does not require a full-time trained operator.

Principles of Operation

Please refer to the schematic above.

Compressed air, controlled by a valve (V1), is forced through a Membrane Separator (G). The resulting flow of nitrogen is 97% pure and is stored in a tank (T). A regulator (R) draws off a low pressure flow of nitrogen to the dewar (D). In the dewar, a closed cycle coldhead (C) cools and liquefies the nitrogen. The liquefaction allows more nitrogen to flow through the regulator into the dewar. As the dewar fills, liquid nitrogen may be drawn off through the transfer line controlled by a drain valve (V2). A level meter turns off the unit when the dewar is full and restarts the system when the level drops to 75% full.

Specifications

• Overall dimensions: within 1.5m x 1.5m x 2m
• Electrical requirements: 6kW, 208/230 V, 60/50Hz, 3 phase. (Single phase available at extra cost).
• Environment: Temperature range should be 5 C to 43 C. Plant should be protected from weather and well ventilated.
• Air compressor should be rated for 1.5 scfm at 110 psig (44 sL/m at 7 bar).
• Unit weight: 226 kg (500 lbs); Shipping weight: 340 kg (750 lbs).

Maintenance

• Compressed air coalescer elements replaced semi-annually.
• Helium compressor system pressures and oil level indicators checked weekly.
• Helium compressor adsorber replacement every 20,000 hrs of operation.
• Cold head service recommended every 10,000 hrs of operation.
  Note: As the cold head seals wear over their 10,000 hr lifetime, liquefaction rate will decrease slightly. The minimum guaranteed liquefaction rate is 36 L/day.

Warranty on Components

One year. Customer is responsible for shipping and handling charges to Quantum Technology Corp.

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