Finned Air Cooling System (Facs); Quench Cooling Accessory (Qca) For Facs; Stand-Alone Quench Cooler - TA DISCOVERY DSC2500 Getting Started Manual

Finned Air Cooling System (FACS)

The Finned Air Cooling System (FACS) allows operation from ambient to 725°C, using flowing air as the
coolant. For installation instructions, see Chapter 2. You can use the optional Quench Cool accessory with
the FACS (see next section) if you want to return the temperature of the cell to ambient more quickly. This
cooler is not intended for use at temperatures below ambient due to the potential for frost formation on the
fins.
Figure 4 Finned Air Cooling System (FACS).

Quench Cooling Accessory (QCA) for FACS

The Quench Cooling Accessory (QCA) is placed inside the FACS and has a reservoir into which you can
place coolant to return the cell to ambient more quickly. The rate of temperature drop depends on the
coolant used (ice and water, dry ice, or liquid nitrogen).
NOTE: When using the FACS QCA, make sure that the cooling accessory identified in the instrument
control program is the FACS and not the Quench Cooler. If the wrong cooler is identified, your results will
be affected.
NOTE: Before you initiate a heating experiment, remove the Quench Cooler and put the manual silver lid
back in place.

Stand-Alone Quench Cooler

The stand-alone Quench Cooler is designed for rapidly cooling the DSC cell to a lower temperature before
initiating programmed heating experiments. The DSC Quench Cooler, along with a thermal enclosure, fits
over the standard DSC cell and has a reservoir into which you can place coolant to cool the cell. The tem-
perature range when using the Quench Cooler is –180 to 550°C. The actual range depends on the coolant
(ice and water, dry ice, or liquid nitrogen).
Discovery DSC™ Getting Started Guide Page 15