Function Heating - IKA IKAMAG RET control visc Mode D'emploi

After the terminati- A - mode
on of the safety
check-up, the follo-
wing displays can
be seen in the B - mode
digital display,
while the func-
tions are switched
off: C - mode

Function Heating

The temperature of the heating plate of the instrument is kept
constant by a control circuit. In addition, this temperature is
monitored by two safety circuits. The required temperature sen-
sor - a thermocouple - is built into the heating plate. The first
safety circuit can be set from 100 - 300°C; the second safety cir-
cuit is firmly set to about 370°C.
An electronic sparkquench circuit prevents the burning of the
contacts on the switching relay. The instrument is equipped
with a silumin heating plate with a heating power of 600 watts.
In order to facilitate cleaning, the surface of the heating plate is
polished. It gets coated rather quickly with an aluminium oxide
protective layer that is chemically very resistant.
Controlling the Medium Temperature with a Pt 100 Measuring
Sensor
To control the medium temperature with the Pt 100 should be pre-
ferred. The Pt 100-operation is digitally displayed by the symbol
Probe . The displayed rated temperature and the real temperatu-
re refer to the medium temperature. The temperature of the hea-
ting plate is limited via the set safety temperature.
18
blinking
blinking
The control of the medium temperature is carried out via a steady
FUZZY logic controller. So the medium temperature detected by
the Pt 100 is heated up to the set temperature as quickly as pos-
sible and without overshooting. The FUZZY logic contoller auto-
matically adapts to the different heating capacities of the different
vessels and their contents. This ensures optimum temperature
conduct without temperature drift and/or ripple.
Controlling the Medium Temperature without a Pt 100
Measuring Sensor
The operation without Pt 100 is digitally shown by the symbol
Probe blinking. The displayed rated and real temperature refer to
the temperature of the heating plate.
A - Mode of Operation with inserted Pt 100
The requested medium temperature (O°C - 300°C) is set on the
rotary „Temp". The set temperature is displayed on the digital dis-
play. SV is blinking.
The function „heating" is switched
on and off with foil key „Temp".
If the function heating is switched
on, the LED „Temp" shines green,
and the digital display changes to
the next display. Real temperature
- medium is displayed.
In A -mode of operation, the requested medium temperature
can only be set when the Pt 100 is inserted.
The heating plate heats up the medium to the set temperature.
During the heating phase the „Temp" LED-colour changes from
green to orange (orange = energy supply to heating plate)
RET cv 0498