Amphenol Kaye CTR-40, User Manual, Page: 33 / 84

6 Parts and Controls
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is red the heater is on, and when it is green the heater is off and the bath is
cooling.
5. The cooling switch turns on the refrigeration for control below 50°C and
rapid cool down. The cooling shuts off automatically above 60°C. Manually
turn off the refrigeration at temperatures where it has been determined to be un-
necessary. See Sections 7.6, Refrigeration, 8.13.2, Cooling Mode, and 8.13.3,
Hot Gas Bypass Mode.
6.2 Bath Tank and Lid
The bath tank and lid assembly includes: the tank, the control probe, the stir-
ring motor, the access hole, and the access hole cover. The stirring motor cover,
covers the stirring motor, cooling fan, and control probe.
•
The bath tank is constructed of stainless steel. It is very resistant to oxida-
tion in the presence of most chemicals and over a wide range of tempera-
tures.
•
The control probe provides the temperature feedback signal to the con-
troller allowing the controller to maintain a constant temperature. The
control probe is a precision platinum resistance thermometer (PRT). It is
delicate and must be handled carefully. The probe is placed in the small
hole in the top of the bath so that the probe tip is fully immersed in the
bath fluid.
•
The stirring motor is mounted on the bath tank lid. It drives the stirring
propeller to provide mixing of the bath fluid. Proper mixing of the fluid is
important for good constant temperature stability.
•
On the bath lid is a large access hole. This is used for filling the bath with
fluids and placement of thermometers and devices into the bath. When
possible the access hole should be covered.
•
An access hole cover should be used to cover the access opening in the
top of the bath. This improves bath temperature stability, prevents excess
fluid evaporation or fumes and increases safety with hot fluid. The user
may drill or cut holes in the cover to accommodate the instruments to be
calibrated or immersed in the bath. Spare covers are available from
Amphenol Advanced Sensors.
6.3 Back Panel
On the back of the bath are the system fuses, removable power cord, high/low
voltage indicator, drain, and serial port.