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HRCF-08122022 - V 1.1
18
19. To change the furnace target temperature, press the
UP ARROW
. The green SV digits will
flicker.
20. Hold down the
UP ARROW
to increase the target temperature. The value will increase
slowly at first, then more quickly the longer the
UP ARROW
is depressed.
21. In Figure 20, our reference cell is Tellurium 130 and our target temperature is 650
°
C. When
the target is reached, press the
SET
button to save.
22. When an experiment is completed and you want to turn off the furnace but leave the controller
on, set the
r-S
value to
STOP
.
23. Alternatively, at the end of an experiment, turn the controller’s power switch off. The SV value
is retained and as soon as the power switch is turned back on, the furnace will immediately
begin heating if the
r-S
value is set to
RUN
.
Figure 20 - Set the furnace target temperature
Figure 18 - Furnace runs on powerup
5.2 WITH VARIABLE TRANSFORMER
If you are controlling the furnace with a variable transformer (Variac), make sure to use a readily
available digital temperature gauge that accepts a Type K thermocouple mini connector. Do not
run full voltage. The furnace will be damaged. Instead, increase the transformer’s voltage slowly
from zero to achieve the desired temperature.
Figure 19 - Furnace does not run on powerup
For more information about setting controller parameters, refer to the SOLO 4848 manual,
included with the controller or download the manual and RS485 serial configuration
.