Brookfield Bath, Model TC-602 - Manual (Page 6)

5
The temperature control stability of a closed loop system is better at the external apparatus than in
the Circulator reservoir (provided the control point of the apparatus represents a constant load and is
well insulated). For example, if you circulate fluid through a viscometer at 50°C, the temperature
variation observed in the Circulator reservoir may be ±0.2°C while the temperature variation in the
viscometer may be only ±0.1°C.
Although temperature stability is generally better at the external apparatus control point, depending on
the length of tubing used and the efficiency of the insulation, the actual temperature reading at the
external apparatus may be slightly different than the temperature reading at the Circulator reservoir.
1.7 Reservoir Purge
When operating at low temperatures, atmospheric moisture tends to migrate into the reservoir and
condense. The 1/8 inch OD Reservoir Purge tube allows you to inject inert gas into the Circulating
bath to prevent the build-up of condensation.
1.8 Ambient and Cooling Coil (Non-refrigerated Models)
Used when auxiliary cooling of circulator coil is needed. Use of cooling coil is recommended when
the bath is operated at 24
o – 35 o C temperatures. When connected to a water source, the stainless
steel coil permits more rapid cooling from high temperatures and will ensure more precise
temperature control and faster response when operating close to ambient temperatures. The cooling
coil inlet and outlet ports are located on the rear of the bath, near the bottom of the reservoir.