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5. If the unit undergoing calibration does not have
stirring capability then skip to the next step. The
“Stir” key under the STIR display will be lit, and
the displays will show the stirring control set
point. The speed may be adjusted by using the
center knob. The adjustable range is 50 – 999,
and also OFF (zero). When the adjustment is
completed, press the “Stir” key under the STIR
display to approve the selection.
6. The HEAT display will now show the tempera-
ture that is currently measured at the probe. If
the display shows “---” then the probe is not
connected to the unit and must be connected
before continuing. The unit will begin heating to
the setpoint. The HEAT and STIR displays will
flash until the temperature is within ±2°C of the
chosen setpoint.
7. Once the temperature is within ±2°C of the set
point, a beep will sound and the “Heat” key
under the HEAT display will begin flashing to let
the user know that the display is ready to be
adjusted using the center knob. Although it may
be desirable to wait longer to allow the tempera-
ture of the unit and fluid to stabilize further.
8. Adjust the HEAT display using the center knob
to make it match the independent probe. When
this is complete, press the “Heat” key under the
HEAT display. The unit will turn OFF automati-
cally. Calibration of the probe system is now
complete.
Timer Shutdown - End
This feature is available for all units, but not all sub-menu
options will be applicable. The purpose of this feature is
to control what is turned off when the timer elapses. The
default is Heating Off for hotplates and stir plates, and
Stirring Off for stirrers.
SERVICE AND CALIBRATION
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