Technical Specifications 6
400/54 Premium Shielded NMR Magnet System Product Overview 93
Liquid helium cryogen details
Liquid nitrogen cryogen details
Table 15 Shipping information
Crate dimensions (magnet and
ancillaries)
127 x 109 x 171(h) cm
615kg (approx.)
Crate dimensions (antivibration legs) 140 x 105 x 52(h) cm (approx.)
180kg (approx.)
Table 16 Liquid helium
Siphon leg diameter 0.5" (12.7mm)
Volume for initial installation (includes
cooling the magnet from 77K to 4.2K
plus the volume required to completely
fill Helium reservoir and to refill Helium
reservoir after magnet energization.)
400 liters (approx.)
Recommended helium refill volume
during normal operation
95 liters
Helium hold time during normal
operation (static magnetic field, leads
withdrawn)
> 270 days
Table 17 Liquid nitrogen
Total volume of nitrogen required for
installation
700 liters (approx.)
(a) For precool of magnet 500 liters (approx.)
(b) For cool and fill of nitrogen can 200 liters (approx.)
Volume of reservoir 62.5 liters
Refill volume 58 liters
Nitrogen hold time in static condition Greater than 14 days
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