29
Controlling Solution
Temperature Using External
Probe
To control the solution temperature plug a PT100 probe
into the probe receptacle located on the back side of
the unit. When the probe is connected, the adjustable
temperature range is 30-250°C. Place the probe into the
solution. The display will indicate the actual temperature of
the solution as measured by the probe.
The external probe offers more exact temperature control
than regulating the top plate by the internal sensor. If you
need to maintain a precise setpoint it is recommend to
use a probe to control the solution temperature instead of
controlling by the top plate temperature.
When using a probe with the Isotemp Advanced unit it is
recommended that a clamp on a support rod be used to
hold the probe in the solution.
To ensure accurate probe readings, the terminal of
probe should not touch the container side or bottom,
and as much of the probe sheath as possible should
be immersed in the solution. Make sure the probe is
immersed in the liquid and is not located in air or outside
of the solution. If the probe is plugged into the hot plate,
but is not in solution while the heat control is operating,
the temperature display will continue to indicate an
ambient temperature, and a probe out of solution error
will occur. Because the set point cannot be reached the
heating element will continue to supply heat to the top
plate, and the maximum top plate temperature(300°C,
400°C or 450°C) may be reached. If the remote probe
does not sense a temperature change in 15 minutes the
unit will display ExProbe Err and shut down.
Using Preset Programs
The Isotemp Advanced unit features the option of
presetting 3 setpoints into its memory. To set a preset,
press any "preset" button, and the indicator LED on the
number button will be illuminated. Then adjust the time,
speed and heat features to your desired setpoints. Press
the number button again to exit the preset program. The
setpoints are stored in memory automatically. The presets
will be held in memory, even if the unit is unplugged, until
you choose to override it with another value.
To activate one of the presets, press the corresponding
number then press the knob, the time, speed and heat
features will automatically adjust itself.
The Isotemp Advanced unit has a preset continuous
mode. In continuous mode, the preset setting value can
run continuously.
By pressing 1 and then pressing the knob the unit will run
by continuous presets by order 1, 2, 3. By selecting 2
and then pressing the knob the unit will run by continuous
presets by order 2, 3.
The unit will stop running when the next preset value
of temperature and speed are both OFF, or preset 3 is
completed.
The default setting is OFF. See "System Configuration"
section to active or disable the preset continuous mode.
O
PERATION
