IKA C-MAG HS 7 control, magnetic stirrer with heating, ceramic hotplate, 0020002694

Thermodynamic infrared transmission and amorphous ceramic matrix

The introduction of extremely high thermal energy into chemical reaction systems requires material architectures that are thermophysically resistant to massive temperature gradients. The IKA C-MAG HS 7 control utilises a monolithic base plate made of glass-hard, amorphous industrial ceramic (180 x 180 mm). This microstructured ceramic plate is not only characterised by absolute chemical inertness towards highly corrosive acids, halogens and bases, but also acts as an excellent infrared transmitter. With a massive heating capacity of 1,000 watts, the system generates surface temperatures of up to 500 °C. The thermal energy is not primarily transferred via pure heat conduction, but is coupled deep into the glass matrix of the reaction vessel with a high proportion of infrared radiation. This minimises thermodynamic latency and enables extremely rapid heating rates for high-boiling-point solvents or melt digestion.

Electromagnetic kinematics and rheological trend metrology

The physical mixing of structurally viscous fluids up to a macroscopic volume of 20 litres requires a constant, slip-free torque. The system generates a strong alternating electromagnetic field that continuously synchronises the stirring rod within the medium at speeds of 50 to 1,500 revolutions per minute. The electronic motor control compensates for rheological resistance in real time. A fundamental analytical function of this cybernetic model is the measurement of the relative torque trend. The system measures the electromagnetic phase shift induced by changes in the fluid’s viscosity during molecular polymerisation, cross-linking or crystallisation processes, and displays this vector change directly on the high-resolution LCD display.

System cybernetics and hardened interface architecture

To protect the electronic control unit in toxic or highly corrosive laboratory environments, the entire user interface is isolated behind a monolithic, chemically resistant sheet of real glass (hardened glass). Thermodynamic control within the medium is achieved via a PID cascade control system directly coupled to the supplied PT 1000 temperature sensor, thereby physically eliminating thermal overshoot. An independent, hardware-based safety circuit (continuously adjustable from 100 to 650 °C) and the IKA SmartTemp ® optical warning system guarantee absolute occupational health and safety by warning of latent infrared residual heat from the ceramic matrix, even after the primary power supply has been disconnected.

Technical Details

Thermodynamics & Heating Technology

• Heating power: 1000 W
• Heating temperature range: room temperature to 500 °C
• Base material: Amorphous industrial ceramic (monolithic)
• Base dimensions: 180 x 180 mm
• Heating rate control: Anticipatory PID control (with external PT 1000)
• Heating plate setting and display resolution: 5 K
• Setting and display resolution for the medium (via probe): 1 K
• Temperature control accuracy (with PT 1000 in the fluid): ± 0.5 K
• Heating rate (1 litre of H₂O in H 1500): 5 K/min

Metrology & Control Engineering

• Viscosity measurement: Relative torque trend measurement (Torque Trend)
• Timer function: Integrated, cybernetically controllable
• Temperature sensor interface: PT 1000 (DIN) for ETS-D5 / ETS-D6 or direct connection
• Sensor failure detection: Error 5 (Sensor in Medium Detection)
• Cybernetic interface: High-contrast LCD beneath tempered real glass

Kinematics & Mechanics

• Speed range: 50 – 1,500 rpm
• Motor power input / output: 9 W (mechanical transmission)
• Speed deviation (under rated load): ± 2 %
• Maximum stirring volume (based on H₂O): 20 litres
• Maximum stir bar length: 80 mm (minimum 30 mm)
• Reversible direction of rotation: Yes, programmable interval operation

Safety & environmental conditions

• Hardware safety circuit: Adjustable from 100 to 650 °C
• Residual heat indicator: IKA SmartTemp ® (Hot Top Indicator)
• Permissible ambient temperature range: 5 – 40 °C
• Permissible relative humidity: max. 80 %
• Protection class (according to DIN EN 60529): IP 21

Infrastructure, Electrical & Connectivity

• System dimensions (W x H x D): 220 x 88 x 354 mm
• Weight: 4.0 kg
• Voltage / Frequency: 220 – 230 V / 50/60 Hz
• Power consumption: 1020 W (standby: 2 W)
• Data interfaces: USB and RS 232 (for firmware updates and LIMS/labworldsoft ® connection)

Scope of delivery

• 1 x IKA C-MAG HS 7 control magnetic stirrer
• 1 x PT 1000.80 temperature probe (stainless steel)
• 1 x IKAFLON ® magnetic stirring bar
• 1 x USB cable and mains lead

(Important note: Support rods and sleeves for vertically securing the PT-1000 probe at the centre of the flow vortex are not included in the scope of delivery!)

Customised requirements & accessories

The C-MAG HS 7 control is a high-performance thermodynamic instrument that achieves its control precision solely through the exact positioning of the sensor system. To complete the PID control loop, the supplied PT-1000 probe must be positioned freely within the liquid phase. For this purpose, vertical locking using an IKA support rod (H 16 V) and cross-shaped sleeve (H 44) is essential. If the probe comes into contact with the hot vessel wall, this would distort the cybernetic control loop. For highly corrosive media that attack stainless steel, we recommend switching to the glass-sheathed PT 1000.70 probe. Please contact our procurement service at any time for the thermodynamically correct configuration.