MVE 21135284, Краткое руководство пользователя

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MVE FUSION Quick Reference Guide
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Safety
READ BEFORE OPERATING THIS EQUIPMENT
Liquid nitrogen (LN2) is used in MVE Fusion Freezers as a refrigerant. Understanding and
following certain safety precautions is extremely important when handling LN2 and cryogenic
containers (Dewars).
Liquid Nitrogen Properties
Nitrogen is a colorless, odorless, tasteless gas. Gaseous nitrogen makes up about 78% of the
Earth’s atmosphere by volume. Once collected and isolated, nitrogen can be liquefied.
Boiling Point @ 1 atm -195.8°C , -320.3°F , 77.4 K
Thermal Conductivity (Gas) 25.83 mW/(m·K)
Heat of Vaporization (Liquid) 198.38 kJ/kg
Density @ 1 atm (Liquid) 1.782 lbs/L , 807.4 g/L , 808.6 kg/m
3
Liquid Nitrogen Safety
Transferring LN2 and operating the MVE Fusion should be done in accordance with the
manufacturer / supplier instructions. It is important that all safety precautions recommended by
the manufacturer be followed.

Nitrogen vapor is a potential asphyxiant as it displaces Oxygen (O
2
)
in confined spaces. Rapid suffocation can occur without warning in
an Oxygen-deficient atmosphere (less than 19.5% O
2
). Chart
Cryogenic Freezers must be installed and operated in well-ventilated
areas.

DO NOT vent container in confined spaces.

DO NOT enter confined spaces where excess nitrogen gas may be
present.