Torrey Pines Scientific, Inc.
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VI. GENERAL DESCRIPTION
Torrey Pines Scientific IC22/IC22XT units are Peltier driven for chilling & heating. They
come with a universal power suppl. The units have only one moving part, the DC fan that
cools the unit. Everything else is solid state and should last years without problem. All
functions of the unit are accessible from the front panel via the membrane switch and
accompanying digital display.
HEATER/CHILLER PLATES
The temperature controlled surfaces are very flat aluminum plates designed for good
contact with any flat surfaced item placed on them. The plate sizes on the IC22 are 2.875"
(73 mm) x 4.375" (111 mm). They will chill and heat quickly without a load on them. The
temperature of the plates are sensed by a platinum RTD mounted under each plate. Each
individual plate has a dedicated Peltier heating/chilling assembly and is controlled
separately. The temperature controller in the unit compares the plate temperature with the
target temperature for each plate, and instructs the individual Peltier module to heat or chill
the plate as required to keep each Plate Temperature equal to its Set Point temperature.
TIMER
All units have a countdown timer for each plate reading in hours, minutes, and seconds. It
can be set to a maximum of 99 hours 59min 59sec. The timer will be displayed in place of
the Set Point temperature for the plate for which the timer has been set. Pressing either the
UP or DN button will display the Set Point then return to displaying the timer after 5
seconds. An AUTO-OFF feature is provided in the Menu under “Timer Options”. If AUTO-
OFF is enabled, the specific plate will go into idle mode when the timer counts down to
zero. See “Setting Timer” and “Setting Idle Mode” sections in this manual for more details.
ALARM
The units have an audible alarm that sounds for one minute when the timer counts down to
zero. Touching the UP ARROW will turn the alarm off during this first minute. However, if
the alarm sounds for the entire minute, it will shut-off the sound automatically. When the
alarm first sounds, the timer will start to count up. This lets the user know how much time
has passed since the timer first sounded. The alarm can be disabled using “Timer Options”
in the Menu.
DATA LOGGER
The units are supplied with a built-in data logger. The data logger can be made to collect
up to 27,000 data points in intervals of 1/second, 1/minute, or one every 5 minutes. The
data can be retrieved using the RS232 serial port. See the instructions later for use.
