IKA WERKE IKAMAG RET control-visc, Руководство по эксплуатации

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RETCV_0107
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11.4 Residual heat warning (HOT)
In order to prevent the risk of burns from a hot heating plate,
the RET control-visc /C has a residual heat (HOT) warning
function.
When the heating function is switched off and the heating
plate temperature is still above 50°C, the green ”Temp” LED
will flash. The digital display will switch backwards and for-
wards between ”Setpoint temp °C” and ”Setpoint
tempe HOT” as a warning that the plate is still hot.
When the viscosity trend measurement function is enabled,
measurement of the heating plate temperature over 50°C is
not possible and the HOT warning on the digital display is not
possible. However, the green ”Temp” LED will continue to
flash to indicate this condition.
If the main ON/OFF switch on the unit is switched off, the dis-
play will remain active and the message ”—-” will flash in the
area of the actual value display area. In this state the stirring
function can be switched on and the setpoint speed can also
be modified.
If the heating plate temperature drops to below 50°C, the unit
will automatically switch off. The display will be switched off
and the unit electronics will be powered down by a relay. If you
have to switch the heating plate off suddenly when the heating
plate is still hot, you must switch the main ON/OFF switch on
and then off again rapidly.
The residual heat warning function will not operate in the event
of a mains power failure or if the power plug is pulled out of
the socket.
The setpoint temperature dis-
played is for the reaction
medium temperature. The
actual temperature of the
reaction medium is shown in
large figures to the left of the
setpoint temperature.
The heating plate tempera-
ture and the heat transfer
medium temperature are limi-
ted by the heating plate
safety temperature (SAFE H)
setting. The reaction medium
tempera-ture is limited by the
medium safety temperature
(SAFE P) setting.
The reaction medium tempe-
rature is controlled and regu-
lated by a fuzzy logic control-
ler. The controller is optimi-
sed by the heat transfer
medium tempera-ture. This ensures that the reaction medium
is heated as quickly as possible without exceeding the set tem-
perature. The fuzzy logic controller automatically adjusts to
various heating capacities of different vessels and their con-
tent. This system ensures optimum temperature control wit-
hout temperature drift or fluctuations.
11.3 Medium temperature control without
external temperature sensors
This is not possible in operating mode A.
Medium temperature control using external temperature sen-
sors is more precise that standard heating plate temperature
control.
The operation without Pt 100 is digitally shown by the symbol
“PROBE” blinking. The display rated and real temperature
refer to the temperature of the heating plate.