LN2 Back-up System

BS-II is to ensure optimal security for critical samples stored in cryogenic freezers. It controls injection of LN2 into freezer when freezer temperature rises above the preset temperature value.

LN2 Back-up System

Advantages                                                                                           

· Compact design, small footprint, can be placed on freezer top       

· Temperature display, setting temperature adjustable by user 

· USA-made ASCO brand cryogenic electromagnetic valve    

 

Safety & Protection

· Valve test button to check whether electromagnetic valve works normally

· High/Low temperature alarm, low battery alarm

· Stop injection of LN2 when door opens, protecting user from being injured by liquid LN2 (need to be connected with ULT freezer door switch).

 

Reliability

· Stainless steel construction, rust-free, easy cleaning;

· Hose & injection tube with sponge cover for insulation

· Rechargeable battery for 48 hours working time. 



ModelBS-II
BasicClimate ClassN/ST/T
Cooling TypeDirect Cooling
RefrigerantLN2
PerformanceCooling Performance (°C)-99
Temperature Range (°C)-60~-99
ControlControllerThermostat
DisplayLED
Temperature Increment (°C)1
ElectricalPower SupplyAC 100~240V, 50/60Hz
Power (W)20
Electrical Current (A)0.25
Weight
&
Dimension
Net/Gross Weight11.2/13.6kg
            24.7/30lbs
Exterior Dimension (W*D*H)200*400*160 (mm)
         7.8*15.7*6.3 (in)
Packing Dimension (W*D*H)370*530*330 (mm)
        14.6*20.9*13 (in)
FunctionHigh/Low Temperature AlarmYes
Low Liquid CO2 AlarmYes
Low Battery AlarmYes
Sensor Failure AlarmYes
Main Power Failure AlarmYes
Valve Open Indicator LightYes
Main Power On Indicator LightYes
Valve Test ButtonYes
Accessories*Hose (connecting backup system & CO2 cylinder)3 meter
Injection Tube (connecting backup system & freezer)2 meter

*The specification of the joint connected to the LN2 cylinder is CGA-295

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