made to set a temperature, to set a timer, and to calibrate the temperature against a
local standard.
KEYBOARD
The keyboard consists of an UP ARROW and a DOWN ARROW. When the keys are
touched, an audible beep will occur. The keys also have tactile feedback when they
are depressed. Use of these arrows will be described next.
X. SETTING TEMPERATURE, TIMER
There are some general points to remember when using the IC50. Although the units
can be set to -10.0ºC they can only go 30.0ºC below ambient room temperature at the
plate surface without a sample block. As an example, if room temperature is 30°C, the
unit will not cool below 0°C at the plate surface. The same is said for setting the
maximum temperature of 110.0°. Low room temperatures will affect how high the unit
can go. Also, sample blocks add mass depending upon their size, and they can keep
the unit from heating or cooling to its limits of -10.0°C to 110.0°C. Some larger loads
may not heat or cool as wanted, or, if they do, it will take longer than the unloaded
plate. Covering or wrapping the sample blocks with something as simple as a paper
towel will improve performance. We sell covers for some of the blocks as well. The part
number for the cover for the aluminum blocks is 720-0009. These help improve
performance.
SETTING CONTROL TEMPERATURE
The IC50 has the ability to control to the set point temperature based on inputs from
either an embedded temperature sensor in the plate or from a plugged-in probe. The
probe must be a specific design available only from Torrey Pines Scientific. If a probe
is not plugged in, the IC50 will default to controlling temperature using the internal plate
temperature sensor. The user has the option of specifying the method of control from
three potential sources—the temperature sensor embedded in the plate (“Control
Using: Plate”), a probe placed in the sample such as a liquid (“Control Using: Probe in
Sample”), or by probe placed in the probe hole of a sample block (“Control Using:
Probe in Block). See
blocks. See the menu map in Figure 1 for details on setting the selected temperature.
Torrey Pines Scientific, Inc.
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