9102S
User’s Guide
10
General Operation
Set the Temperature
You can enter temperature set-points from the front panel.
explains how to
program set-points. To set the temperature set-point on the Product using the front-panel keys:
1. Press
SET
twice to access the set-point value.
2. Press
u
or
d
to change the set-point value.
3. Press
SET
to program in the new set-point.
4. Press and hold
EXIT
to return to the temperature display.
When the set-point temperature is changed the controller switches the well heater on or off to raise or
lower the temperature. The displayed well temperature gradually changes until it reaches the set-point
temperature. The well may require another 5 to 10 minutes to reach the set-point depending on the
span. Another 5 to 10 minutes is required to stabilize within ±0.05°C of the set-point.
Change the Display Units
This Product can display temperature in Celsius or Fahrenheit. The temperature units are shipped from
the factory set to Celsius. There are two ways to change to Fahrenheit or back to Celsius:
1. Press
SET
and
u
simultaneously. The temperature display changes units.
or
1. Press
SET
three times from the temperature display to show
Un= C
2. Press the
u
or
d
key to change units.
3. Press
SET
to save the setting or
EXIT
to continue without changing the setting.
Operation
This section discusses how to operate the Product using the front-control panel. Use the front panel to
monitor the well temperature, set the temperature set-point, monitor the heater output power, adjust
the controller proportional band, and program the Product. Operation of the functions and parameters
are shown in Figure
. This chart may be copied for reference.
In the subsequent discussion, a button with the word
SET
or
EXIT
inside, a
u
, or
d
, indicates the
panel button, while the dotted box indicates the display reading. Explanations of the button or display
readings are to the right of each button or display value.
