Model CA5000: Product Information.


Model CA5000 C02: Freezer Temperature Monitor Alarm with Liquid CO2 Backup Injection
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Key Features:

  • NIST calibrated/traceable sensors and system.
  • NIST certificate provided.
  • 10-hour minimum ULT freezer back-up cooling time using one, 50-pound cylinder of CO2 at -60 °C.
  • 48-hour battery back-up in case of main power failure.
  • Digital display of interior freezer temperature.
  • User programmable alarm set-points and coolant injection rates.
  • Relay for connecting to any auto dialing or remote alarm.
  • Door safety interlock switch input to prevent injection of coolant while door is open.
  • Large capacity maintenance-free battery with charge status indicator.

Product Overview:

The CA5000 C02 is the most complete ultra-low temperature freezer C02 backup injection system for extreme emergency operational situations. Besides providing user-adjustable cryogenic injection, the system is NIST claibrated and traceable. It includes freezer chamber temperature monitoring, alert status indication (and an alarm output) along with battery back-up operation.

The system far exceeds other C02 or LN2 freezer backup systems because it combines NIST traceability, chamber temperature monitoring, alert status indication, stand-alone battery backup operation, adjustable injection temperature control with C02 backup injection!

NOTE: Click here for our model CA5000-N if you need a LN2 backup injection for your ULT freezer system.

Should a serious mechanical or a long-term power failure occur, the CA5000 C02 will automatically activate its backup injection cooling capability after a chamber temperature rise alert is indicated (and after a user-designated period). Once initiated, C02 coolant is directly injected into the freezer or cooling cabinet using the gas injection ports provided on all ULT freezers.

The higher level of cooling operation our systems offer is critical when storing vaccines (like mRNA vaccines), virus samples, biopharmaceuticals, genetic materials and other materials that MUST be continuously maintained at tight ultra low temperature ranges.

The system is simple to program and includes the ability to set and monitor freezer chamber temperature, set alarm temperature parameters, set alarm delay periods, set backup cryogenic injection initiation conditions and C02 injection rates (for emergency control of chamber temperature).

For operational safety, the system includes a door safety interlock switch (to disable gas injection when the main door is open) and all programmed operating parameters are stored within a non-volatile memory. The system is "made in the U.S.A." at our Dover, NH factory.

Note: We supply the tubing from our unit to the freezer. Tubing between the gas supply and our system must be connected by the user and/or facilities engineers.

Available Options: