3
FIGURE 3. TEMPERATURE CONTROLLER R/S, BACK PANEL
(230 V MODEL)
APPLICATION DATA
Applications for the Temperature Controller R/S include heating and cooling
of solids, liquids, and gases. For all applications, there are certain set-up
operations that should be made carefully to assure optimum and safe perfor-
mance. The power and type of heater, the positioning of the sensor, the amount
of thermal insulation, the flash point of the heated material and the many
controller set-up menu options are among the many variables to be consid-
ered in setting up the controller.
One of the most important of these considerations is the heater sizing. A heater
that is too low powered may not be able to raise or even maintain the material at
the desired set point. A heater that is too high powered will not maintain precise
temperature control and may be unsafe. Because of the many system vari-
ables, optimum heater sizing must be determined experimentally; however, an
approximation can be made through a few calculations. These calculations are
included in the software program included with the unit.
DESCRIPTION
GENERAL
The Temperature Controller R/S is designed to maintain a constant, pre-set
process temperature. It uses a temperature sensor to detect the temperature
of the process. Using a microprocessor software algorithm, it adjusts a heater
or cooler by varying the output duty cycle. The Temperature Controller R/S is a
single-loop controller intended for laboratory or industrial applications. The unit
can control loads of up to 15 amperes (A).
The Temperature Controller R/S is housed in a rectangular metal enclosure,
with plastic bezels on the front and back. All connections are made on the
rear of the unit. The display and keypad are on the front. A bail bar, or tilt
stand, is used to elevate the front display panel for easy viewing and opera-
