-
Hotplate center and outer edge.
-
The sample in the vessel and hotplate surface.
In order to ensure the accuracy of the temperature inside the
container, please use the external temperature sensor
PT1000.
6.1 Working with external temperature
sensor
Figure 6
The external temperature sensor PT1000 is the
manufacturer’s standard accessory. When PT1000 sensor is
connected and rotate the temperature control knob, LED
displays the temperature setting value and shifts to real
value in 5 seconds. Safe circuit controls hotplate
temperature under 320°C. Comparing with the temperature
control of the hotplate, the external temperature sensor can
control the medium’s temperature more precise. The
heating function will be stopped automatically under
abnormal conditions. Please operate follow the instructions
below:
•
Switch OFF the instrument.
•
Ensure the external temperature sensor is inserted in
the media heated.
•
Switch ON the instrument and run heating function.
If the heating function does not work, please contact
manufacturer/supplier for technical support.
6.2 Residual heat warning
（
HOT
）
In order to prevent the risk of burns from a hotplate, digital
hotplate has a residual heat warning function. When the
heating function is switched off and the heating plate
temperature is still above 50°C, “Hot” will flash to warn
that there is a hazard of burns from the hotplate. When the
unit is powered off, the LED screen displays the
temperature of hotplate and Hot in turn. When the hotplate
temperature drops to below 50°C, the unit will
automatically switch off. If users want to turn off the LED
immediately, just pull out the plug directly. When the plug
is pulled out, the residual heat warning function cannot be
run.
