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7 Parts and Controls
7.1 Control Panel
The following controls and indicators are present on the controller front panel
(see Figure 2 below): (1) the digital LED display, (2) the control buttons, (3)
the on/off power switch, (4) the heater mode light, and (5) the cooling on/off
switch.
1) The digital display is an important part of the temperature controller. It
displays the set-point temperature and bath temperature as well as the
various other bath functions, settings, and constants. The display shows
temperatures according to the selected scale units °C or °F.
2) The control buttons (SET, DOWN, UP, and EXIT) are used to set the
bath temperature set-point, access and set other operating parameters,
and access and set bath calibration parameters. A brief description of
the functions of the buttons follows:
SET - Used to display the next parameter in a menu and to set parame-
ters to the displayed value.
DOWN - Used to decrement the displayed value of parameters.
UP - Used to increment the displayed value.
EXIT - Used to exit from a menu. When EXIT is pressed any changes
made to the displayed value will be ignored.
3) The on/off switch controls power to the entire bath including the stir
-
ring motor.
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7 Parts and Controls
Set Down
Up
Exit
Cooling Power
Heater
Mode
Smoke Dead DisplayWindow
CTR –80
O
I
O
I
-80.00 C
1
2
4
3
5
Figure 2 CTR-80Control Panel