Ultra Low Temperature (ULT) Freezer Monitor with Controllable Backup C02 Injection and Alert Condition Notification.

 CA5000-C Liquid C02 ULT Freezer Backup System


Model CA5000-C is an Ultra Low Temperature Freezer Temperature Monitor/Alarm with Liquid CO2 Backup Injection and a Battery Baxkup.
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Key Features:

  • More than 10 hours of -60 °C freezer chamber backup with one 50-pound cylinder of C02.
  • Internal maintenance-free battery with charge status indicator that provides at least 48 hours of freezer backup operation after a power outage.
  • Digital display of interior ULT freezer temperature.
  • Independent user-programmable setpoints for system alarms and liquid C02 injection times.
  • Visible and audible indicators for alarm conditions and system status.
  • Programmable delays to minimize unnecessary C02 injections and nuisance alarms.
  • Relay contact output for central alarm systems and automatic notification systems.
  • Door safety interlock switch preventing liquid C02 injection while freezer is being accessed.
  • EU Declaration of Conformity.

Product Overview:

The CA5000-C Liquid C02 Freezer Backup System is a unique combination of field-proven, ultra-reliable alarm systems and a liquid C02 injection system for safeguarding your precious biological materials and other products stored within an ultra-low temperature (ULT) mechanical freezer. The system works with any mechanical ULT freezer and offers user-programmable alarm and control setpoints, and alarm delay times, all stored in non-volatile memory.

The customer-supplied liquid C02 is maintained at high 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 liquid C02 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 C02 injection from the CA5000-C system will bring a freezer at room temperature to ultra-low temperature without having to wait for the typical ULT freezer cool down period.

NOTE: Click here for our model CA5000-N if you need controllable liquid nitrogen backup injection for your ULT freezer system.

Our CA5000-C systems are easy to program, including ULT freezer chamber target temperature, alarm delay periods, C02 injection initiation conditions, and C02 injection timing. For operational safety, the system includes a door interlock switch that disables C02 injection when the freezer door is open. The CA5000-C is MADE IN THE USA at our Dover, NH facility.

Note: Hampshire Controls supplies the tubing from the CA5000-C to the ULT freezer. Tubing between the C02 supply and the CA5000-C must be provided by the user, or, purchase our A84000-19 CA5000-C Liquid C02 Backup System Installation Kit.

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