24 Initial Operation
3.3 Operating heater with a temperature sensor
Connecting the temperature sensor
Switching on the heater
Actual temperature 24° C
Selecting the command temperature
Command temperature 78° C
Connecting the temperature sensor
Be
sure
to
(see "6 Accessories").
Connect the temperature sensor at the rear of the laboratory
stirrer.
Make sure that the cable of the temperature sensor is routed so
that it cannot touch the heating zone.
Immerse the temperature sensor into the liquid min. 30 mm in
depth.
In contrast to operation without temperature sensor, the laboratory
stirrer now features:
Automatic temperature control instead of fixed heating stages
with control of energy.
Temperature display alternating between command temperature
and actual temperature instead of showing the heating stages.
Switching on the heater
Press and hold the right control knob for approximately
2 seconds until the heater display appears.
The display shows the actual temperature measured by the
temperature sensor at that time.
Select your desired command temperature within 30 seconds.
After 30 seconds the heater switches off again if you do not
select a command temperature (safety function).
Selecting the command temperature
Select the desired command temperature using the right control
knob (turn clockwise to increase temperature). The maximum
command temperature is 200°C.
The selected command temperature is shown on the display
(indicated by dots between figures).
The bar graph indicates the heating activity of the heater.
The heater heats up and maintains the selected temperature.
The residual-heat indicator "HOT" continues to light up as long
as the glass-ceramics heating zone is still hot.
CAUTION! Risk of burning!
Do not touch the heating zone!
The display now alternates between command temperature (with
dots between figures) and actual temperature (no dots between
figures) every 5 seconds.
use
the
correct
temperature
sensor