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8 Segment Programmable
Model w/OTP
Note
The controller will return to the HOME
DISPLAY if left idle for more than a
few seconds.
Note
Once the desired parameter has been
selected, depressing either the UP or
DOWN button will change the parame-
ter value. In all cases, the value
shown on the display is the current
working value of that parameter.
Output 1
AUTO/MAN
Button
PAGE
SCROLL
Button
Button
8 Segment Programmable Models with OTP
20
Display
Window
Upper
Display
Lower
Display
RUN/HOLD
Button
UP ARROW
Button
DOWN ARROW
Button
The 8 segment programmable controller consists of
a microprocessor based three-mode PID
(Proportional, Integral, Derivative), programmable tem-
perature controller with over-temperature protection
and appropriate output switching devices to control the
furnace. The digital readout continuously displays
chamber (upper display) and setpoint (lower display)
temperatures unless the SCROLL or PAGE button is
depressed. The programmable controller can be used
as a single setpoint controller or as a programmable
controller. The 8 segment digital model enables eight
segments of programming.
Basic Operation
When the controller is turned ON, it will perform a
short self-test and then change to the HOME DIS-
PLAY. The HOME DISPLAY shows the measured tem-
perature (process value) in the upper display and the
desired value (setpoint) in the lower display.
To Change the Setpoint
If you want to change the setpoint, press the UP or
DOWN button until the desired setpoint value is dis-
played in the lower display and then release the but-
ton.
To View Display Units
From the HOME DISPLAY press the SCROLL button.
The display will briefly show the temperature units in
°C/F/K and then return to the HOME DISPLAY. (If you
require a different temperature unit call Barnstead
International Customer Service.)
To View the % Output Power
From the HOME DISPLAY press the SCROLL button
twice. Press the UP or DOWN button to display the
value. This value is a read-only value and cannot be
changed.
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