DTC-300 Getting Started Guide
Page 22
Connecting the Coolant
A refrigerated circulator must be connected directly to the heat sink inlet and outlet connections on the rear
of the test stack. The flow direction through the heat sink is important. Set the refrigerated circulator tem-
perature at 0–5°C for the sample testing range of 20–100°C, and set the refrigerated circulator temperature
at 20°C for the sample testing range of 100–300°C. The minimum sample temperature is approximately
20°C above the coolant temperature.
For -20°C to the 20°C tests, the refrigerated circulator must be set at -40°C to -35°C. For sub-ambient tem-
perature measurements, the sub-ambient insulation ring is used in place of the guard furnace.
The test chamber door must be closed to prevent moisture in the surrounding air from condensing on cold
surfaces and purged with nitrogen.
CAUTION: Never operate the DTC-300 without coolant flowing through the heat sink.
MISE EN GARDE: N'utilisez jamais le DTC-300 en l'absence du fluide caloporteur dans le dissipa-
teur de chaleur.
1
Insert the plastic fittings attached to the coolant hoses (supplied with the instrument) into the two
connectors. The connectors are lock-in-place fittings with shut-offs built into them. Press the male fitting
into the female. To remove, depress on the release button and pull the male fitting from the connector.
2
Connect a chiller or city water supply directly into the
COOLANT
inlet and outlet connectors on the
rear of the instrument.
