IKA C-MAG HS 7 control Magnetic Stirrer with Heating, LCD Display, 20 Litre, 0020002694

As soon as a stirring and heating process is no longer to be carried out merely as a secondary task, but must be documented in a traceable manner, controlled via an interface or regulated based on a temperature measured within the medium, a simple analogue dial reaches its limits. The IKA C-MAG HS 7 control (0020002694) features an LCD display for setpoint and actual values, RS232 and USB interfaces, and a stirring capacity of up to 20 litres; it was awarded the reddot award in 2017.

Digital display and interfaces for documented processes

Speed and temperature are each displayed on an LCD screen as setpoint and actual values; the display resolution for temperature is 1 Kelvin. The unit can be connected to a control system via the RS232 interface and the USB-B port; the Labworldsoft laboratory equipment software is listed in the range of accessories for this purpose. For laboratory environments with traceability requirements, this is a difference that goes beyond mere usability.

Stirring up to 20 litres with automatic direction reversal

The speed range extends from 50 to 1,500 revolutions per minute with a deviation of just ±2 % (no load, rated voltage, at 1,500 rpm and 25 °C) and a setting accuracy of 10 revolutions per minute. Automatic direction reversal and interval operation are available, as is viscosity trend measurement, which allows changes in the medium’s viscosity to be monitored during the process. Stirring rods ranging from 30 to 80 millimetres in length can be used; the maximum load on the base is 25 kilograms.

Precise temperature control directly within the medium

The scope of delivery includes a PT 1000.60 stainless steel temperature sensor; ETS-D5 and ETS-D6 contact thermometers can also be connected. The temperature control accuracy within the medium is ±0.5 Kelvin with the PT1000 probe and as high as ±0.2 Kelvin with the ETS-D6 (measured in each case with 500 ml of water, a 40 mm stirring rod, 600 rpm, 50 °C). A ‘sensor-in-medium’ detection function indicates when the temperature sensor is actually immersed, thereby contributing to process reliability.

Typical applications

With its digital display, interfaces and precise medium temperature control, the C-MAG HS 7 control is technically suitable for:

• Syntheses and reactions requiring documented temperature control within the medium
• Processes with a defined reaction endpoint requiring an accuracy of ±0.5 K or better
• Stirring processes up to 20 litres with varying viscosity, monitored via viscosity trend measurement
• Automated or software-controlled laboratory workstations via RS232/USB
• Quality control with auditable time and temperature profiles

Selection guide within the C-MAG series

Within the C-MAG family, the ‘control’ version offers the highest level of specification, sitting between a simple analogue dial and a pure heating plate:

If you do not require the interfaces or precise media temperature control, the C-MAG HS 7 or the C-MAG HS 10 offer a more cost-effective solution. If you already know that processes are to be documented or controlled via software, opting for the ‘control’ version will save you the expense of retrofitting at a later date.

Differences from comparable IKA stirrers

Compared to the simpler IKA C-MAG HS 7, the ‘control’ version offers an additional LCD display, interfaces and a larger 20-litre stirring capacity. The IKA C-MAG HS 10 retains analogue operation but features a larger 260 x 260 millimetre plate for higher heating power. At the single-station level, with comparable digital capabilities, the IKA Plate (RCT digital) with an LCD display and aluminium base, and the RET control-visc white with an additional weighing function are also available, each with its own specific focus.

Technical details

Scope of delivery

• 1 x IKA C-MAG HS 7 control magnetic stirrer with heating (0020002694)
• 1 x PT 1000.60 temperature probe, stainless steel
• 1 x IKAFLON 30 magnetic stir bar
• 1 x IKAFLON 40 magnetic stir bar
• 1 x screwdriver
• 1 x USB A-to-B cable

Use, installation, maintenance and disposal

With degree of protection IP 21, the C-MAG HS 7 control is protected against vertically falling dripping water and is designed for operation in a fume hood or on a stable laboratory bench. The temperature of the base surface rises by up to 2 Kelvin during one hour of continuous stirring; this must be taken into account when reading the actual hotplate temperature. The safety circuit can be freely adjusted between 100 and 650 °C and thus adapted to the specific process, rather than being fixed as with simpler models. Before carrying out maintenance work or cleaning the ceramic surface, the unit should be allowed to cool down and disconnected from the mains. At the end of its service life, the device, as an electrical appliance, must be disposed of separately from household waste via the waste electrical and electronic equipment (WEEE) collection scheme; the manufacturer’s WEEE registration number is DE 66784213.

Investment rationale: When does the control version pay off?

The additional cost compared with the analogue C-MAG HS 7 is particularly worthwhile if temperature profiles need to be documented, read out via RS232 or USB, or controlled within the medium with an accuracy of ±0.5 Kelvin or better. For simple, non-critical heating and stirring processes without a documentation requirement, the additional features are often unnecessary; in such cases, the C-MAG HS 7 or the C-MAG HS 10 with greater heating power is sufficient. If you regularly switch between several workstations using standardised, software-supported process control, the ‘control’ variant pays for itself through the time saved on documentation and calibration.

Individual requirements and procurement service

Additional original accessories are available for the C-MAG HS 7 control if required, such as ETS-D5 or ETS-D6 contact thermometers, support plates, reaction blocks and the Labworldsoft software. Through our procurement service, we also assist you with spare parts, calibrations and the standardisation of equipment across multiple workstations. Further information and contact details can be found on our procurement service page.

Frequently Asked Questions

What distinguishes the C-MAG HS 7 control from the standard C-MAG HS 7?
The ‘control’ version features an LCD display for setpoint and actual values, RS232 and USB interfaces, automatic direction reversal, viscosity trend measurement and a larger stirring capacity of 20 litres instead of 10 litres.

Is a temperature sensor included in the scope of delivery?
Yes, the C-MAG HS 7 control comes as part of the scope of delivery with a PT 1000.60 stainless steel temperature sensor. ETS-D5 and ETS-D6 sensors fit the same connection but are available separately.

How accurately can the temperature in the medium be controlled?
With the supplied PT1000 probe, to within ±0.5 Kelvin; with an optional ETS-D6 probe, to within ±0.2 Kelvin, in each case under the defined measurement conditions specified in the data sheet.

Can the safety circuit be adapted to the specific process?
Yes, the safety circuit is freely adjustable between 100 and 650 °C, rather than being fixed as in simpler models.

Can the device be controlled via software?
The RS232 and USB interfaces allow connection to the Labworldsoft software listed in the IKA range of accessories; this enables stirring and heating parameters to be logged centrally rather than being read manually from the device.

How should the C-MAG HS 7 control be disposed of correctly?
As an electrical appliance, it should be taken to a waste electrical and electronic equipment (WEEE) collection point rather than disposed of with household waste; the manufacturer’s WEEE registration number is listed in the section on ‘Use, installation, maintenance and disposal’.