Heidolph EKT Hei-Con G - Manual (Page 24)

24
E
4.2 Temperature measurement
After performing the system test described above the first temperature measuring value
and the °C symbol appear. The EKT Hei-Con is ready for operation.
4.3 Setting the reference value
Press briefly
In the bottom line of the
display the set reference
value is indicated. You can
now alter this.
Press briefly
Set the required reference
value using the arrow
buttons.
Press continuously
Fast run-through: after
3 seconds the reference
value is changed in steps
of 10.
Press.
The reference value is
taken over. After 3 secs
this is also carried out
automatically.
4.4
Security shutdown temperature max
With the “Max“ key, the security shutdown temperature is displayed.
4.5
Regulating procedure
To prevent the temperature from overshooting when a quantity of fluid is heated, a FUZZY
logic is used for the EKT Hei-Con in order to optimize the control. The heating function of
the magnetic stirrer is already switched off before reaching the reference temperature so
that heating is only effected by the residual heat from the hotplate.
Note
For heating small quantities (<500 ml): Set the temperature of the
hotplate to about twice the value of the reference temperature.
The maximum temperature should only be used for large quantities.
For reference values over 150 °C a slight control deviation can occur. This can be
compensated for by setting a higher reference value.