21
The preferable method for controlling the average temperature is with contact thermometer�
After the set point temperature has been adjusted, this results in a short heating-up time, prac-
tically no temperature drift and only minor fluctuation in temperature�
A 6-pin jack is located on the rear side of the device for connecting the PT 1000 series, contact
thermometer or the contact plug� The electronics of the devices returns a test current that must
flow via connector pins 3 and 5 for the heating plate to heat up�
Safety contact thermometers:
Acc� to DIN 12 878 class 2 or acc� Gerstel are connected with a three-wire cable, the test cur-
rent flows through the contact thermometer�
Safety function:
If the test current is interrupted because of e�g� breakage of contact thermometer or falling out
of the cable plug, the heating cuts off�
Contact thermometer without safety circuit:
Acc� to DIN 12 878 class 0� The device only heats if the test current circuit is closed by an elec-
trical connection of the plug pins 3 and 5�
2-wire connecting cables:
Connect plug pins 3 and 5 of the device plug�
3-wire connecting cables:
Here the test current circuit can also be produced in the terminal head of the contact thermom-
eter (connect plug pins 2 and 3)�
A 3-wire cable with the required bridge is available (accessories)�
Settings:
For detailed instructions for settings and limit values, please refer to the operating manual of
the device you are connecting�
The desired average temperature can be adjusted on the contact thermometer. The
required surface temperature of the heating plate can be selected with the rotating
/ pressing knob or button.
Adjusting the temperature of device to the maximum adjustable temperature will result in the
fastest possible heating time, but the average temperature may fluctuate to values above the
set-point temperature on the contact thermometer� By adjusting the rotating / pressing knob or
button to approximately twice the set-point value of contact thermometer (with a set-point of +
60 °C, the temperature of device would be set to + 120 °C), you will reach a good compromise
between a fast heating time and over-shooting the set point� If you adjust the temperature
of the device to exactly the set-point temperature, the medium will not reach the set-point
temperature because some loss of the heat will always occur between the heating plate and
the medium�
If a fault occurs in the control circuit, the maximum heating plate temperature can
be adjusted with the safety temperature setting screw.
/// Controlling the medium temperature limit using a contact
thermometer
› The set and actual temperature values are shown permanently on the display�
› When the heating function is switched on, the “Heating function activated” symbol is
displayed�
› When the device is switched off while the heating plate temperature is higher than 50 °C,
the display shows “Hot!” and the actual temperature value is shown, even if the device is
switched off�
Summary of Contents for Plate RCT digital
Page 1: ...IKA Plate RCT digital RCT 5 digital...
Page 2: ...Fig 1...
Page 12: ...14 1 2 1 2 3 OFF 20 mm...
Page 15: ...17 Operation Start up 1 2 OFF C F rpm 3 4 Temp 0 310 C Speed 0 1500 rpm SET SET SAFE 5 ON...
Page 25: ...27 1 2...
