LN2 instantly drops the temperature of the test chamber interior. This is ideal for stress tests and efficient thermal dissipation. CO2 can lower the chamber's internal temperature almost instantaneously to -73°C (-100°F).
Liquid CO2 is available to customers in either a bulk-system, stand-alone tank or a cylindrical system that stores much smaller amounts in multiple attached vessels.
Liquid nitrogen (LN2) is directly injected into the test chamber to both expand achievable temperature ranges and raise the temperature change rate. Upon contact with the air inside the test chamber, following the same thermodynamic principle as the CO2 boost, liquid nitrogen can rapidly decrease the interior chamber temperature. A LN2 boost can quickly lower the temperature to a cryogenic temperature of -185°C (-300°F).
Unlike CO2 which has a boiling point of -57°C (-70.6°F), liquid nitrogen has a boiling point of -196°C (-320.8°F). Therefore, liquid nitrogen provides pull-down rates that are much faster.
LN2 or CO2 cooling options for the FDP-4246 should only be considered in bulk form. The cylinder option for the sizable workspace is not ideal.
CO2 Scrubber Cartridge
The CO2 scrubber cartridge is a dependable filtering system designed to eliminate contamination caused by moisture, oil, and dirt in bulk or bottled liquid CO2 supplies. It's suitable for both 1000-psi and 300-psi services and assures pure CO2 at valves and metering orifices, completely eliminating problems of clogging and erratic operation.
Manifold for 6 Cylinders (MLC-6)
Included with the cylinder-based CO2 cooling system, the manifold system is designed to regulate and monitor the vaporized gas coming from cryogenic cylinders. This system may be used to test the MLC-6 specification.
CO2 Tank to Test Chamber Hose (DAK-6)
Included with the bulk order CO2 cooling system, the tank-to-test chamber hose provides safe and effective delivery of liquid CO2 to the chamber interior. This system may be used to test the DAK-6 specification.
- -18°C (0°F) and 300 psi
- This larger reserve system has a higher initial cost but then offers a much lower per pound CO2 cost to customers and is recommended for long-duration testing or multi-chamber operation