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After the speed of the motor and of the magnetic bar in the medi-
um have stabilized to the set rated speed (waiting time about 3
minutes), the viscosity measurement is started by pressing foil
key „Visc".
The real controlling variable is sto-
red as reference value 0 %, and is
digitally displayed.
Further displayed are the set rated
speed, as well as the viscosity
change in %.
Depending on the increase or
decrease of viscosity, the value is
displayed as positive or negative
value. A simultaneous display of
the precentage and of the real
speed is not possible.
By presing foil key „mode", it is possible to inquire rated and real
temperature , but the measurement of the viscosity trend has pri-
ority, and the instrument switches the digital display back to trend
display after about 5 seconds. When the stirring function is swit-
ched off, the trend display is switched off as well. Analog, the
trend display can only be switched on with an activated function
„stirring".
PLEASE NOTE: While the measurement of the viscosity
cannot be seen on the digital display, even if the heating plate
is exceeding 50°C.
Display
When the functions are switched off, the digital display always
shows the set speed value.
RET cv 0498
trend is on, the state of the heating plate
real value
rated value
Pt 100
Set value
Process value; (real value)
inserted
function started
(rated value)
If in all three modes of operation only function „heating" has been
started, the display shifts to rated and real temperature.
If in all three modes of operation only function „stirring" has been
started,the display shifts to rated and real speed.
If both functions have been started, the display of function „hea-
ting" always has preference. If in this case the speed is changed
via rotary knob „Mot" (not possible in C -mode of operation), the
display reverses to speed display for a duration of 5 seconds.
The mode of the display can also be changed by pressing foil key
„Mode" once. After 5 seconds the display shifts back to tempe-
rature display.
If function „heating" is switched
off, and if the heating plate tempe-
rature is higher than 50°C, LED
„Temp" will be blinking orange
(20% ON ... 80%OFF).
The digital display changes con-
stantly from rated temperature °C
to rated temperature HOT
e.g. phys. unit,
mode of
opera-
tion,
error
code
mode of
operation
B or C
21
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