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Liquid nitrogen (LN2) freezer backup system with user-programmable alarm and LN2 injection control setpoints.
  • Freezer Backup Time: >48 hours with -60 ºC setpoint
  • Backup Temperature: -150 to -40 ºC
  • Battery Backup Time: >48 hours, typ
For backup ULT freezer backup with liquid CO2, see the CA5000-C Liquid CO2 Freezer Backup System.
Unit of Measure

Technical Specs

Brands

 N/A Hampshire Controls

Freezer Backup Time (50-lb CO2 Cylinder)

 N/A >48 hours with -60 ºC setpoint

CO2 Supply Pressure at 20 Degree Celsius (ºC)

 N/A 18 to 24 psi124 to 165 kPa

Backup Temperature Setpoint Range

 N/A -150 to -40 ºC

Freezer Temperature Monitoring Probe Range

 N/A -200.0 to +50.0 ºC

Output Relay (Dry Contacts)

 N/A Single Form C (Single Pole Double Throw (SPDT)), Normally Open (NO) or Normally Closed (NC)

Note for Output Relay (Dry Contacts)

 N/A User Adjustable Delay Period

Freezer Temperature Probe Accuracy (±)

 N/A 2 ºC

Freezer Temperature Probe Display Resolution

 N/A 1 ºC

Battery Backup

 N/A 12 VDC Voltage, 12 Ah Sealed, Lead-Acid Rechargeable, >48 Hours Backup, Type

Features

N/A

  • Freezer cabinet maintained at temperatures as low as -150 ºC
  • More than 48 hours of -60 ºC freezer backup with one 180-liter cylinder of LN2
  • Internal maintenance-free battery with integrated charger and low battery indicator providing at least 48 hours of freezer backup after a power outage
  • Digital display of interior ULT freezer temperature
  • Independent user-programmable setpoints for system alarms and LN2 injection times
  • Visible and audible indicators for alarm conditions and system status
  • Programmable delays to minimize unnecessary LN2 injections and nuisance alarms
  • Relay contact output for central alarm systems and automatic notification systems
  • Door safety interlock switch preventing LN2 injection while freezer is being accessed
  • EU Declaration of Conformity

Available Options

N/A

  • Backup temperature setpoint range between -150 ºC and -40 ºC
  • Universal UL listed power supply 120-240V/50-60 Hz with interchangeable international AC blades
  • Programmable LN2 injection temperature setpoint and injection valve on-time and off-time
  • Programmable temperature alarm setpoint, alarm and relay delay periods, and alarm mute periods
  • On-demand purge command for verifying proper LN2 injection into freezer cabinet

Additional Information

N/A The CA5000-N Liquid Nitrogen Freezer Backup System is a unique combination of field-proven, ultra-reliable alarm systems and a liquid nitrogen (LN2) injection system, safeguarding your precious biological materials and other products stored at ultra-low temperatures (ULT). The system offers user-programmable alarm and control setpoints and alarm delay times, all stored in non-volatile memory.

The customer supplied LN2 is maintained at 22 psi (152 kPa) nominal pressure, ready to be injected into a failing ULT freezer cabinet. When a power outage or freezer malfunction occurs and the freezer warms above the user-defined setpoint, an alarm sounds along with a flashing red LED. If the freezer continues to warm, then a user-defined quantity of LN2 is injected into the freezer, quickly restoring the temperature below the setpoint. In addition to providing insurance against power outages and freezer malfunctions, a manual LN2 injection from the CA5000 system will bring a freezer at room temperature to ultra-low temperature without having to wait for the typical ULT freezer cooldown period.

The peace of mind and rapid cooling efficiency of our CA5000 backup systems is crucial for vaccine and mRNA vaccine storage, virus and genetic samples, in vitro fertilization (IVF) samples, biopharmaceuticals, and other materials that must be stored at ultra-low temperatures.