Heidolph 501-62020-00 Hei-TORQUE 200 Digital Precision Overhead Stirrer, 100,000 (mPa s), 50 Litres, 10 – 2,000 rpm, USB and RS 232

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Number of speed gears1
Rotation speed range10 – 2,000 rpm
Rotation speed indicatordigital
color 3.2"
Speed controlelectronic
Max. torque200 Ncm
Torque indicatorprecise value
Overheat protectionautomatic cut-out
Viscosity max.100,000 mPa s
Stirring cap. (H₂O), max.50 l
Thought-shaft design
Shaft diameter, max.10.5 mm
Counter/ Timer
Analog / digital interfaceUSB and RS 232
Power rating motor input120 W
Protection class DIN EN 60529IP 54
  • £1775.00
  • £1508.75
    • SALE!

High-end model

The professional stirrer for demanding tasks: several options for individual settings as ramps and interval operation. USB and RS 232 interfaces allow for documentation and reproducibility, e.g. with the free Hei-Control software (for up to four devices)

These stirrers are ideal for demanding tasks which have to be reproducible and documentable. The huge number of additional features and operation modes allow for perfect adjustment to your individual application

Accurate torque indication shows any viscosity changes
Constant speed even under changing loads

Digital 3.2” display for ease of operation:
• Allows for preprogrammed profiles
• Saves these profiles in memory
• Interval operation
• Watch rpm and torque graph life
• Timer / Countdown / Real time settings

All performance-related parameters can be set individually:
Intensity of the start operation - from slow to fast
• The rotational speed can be limited to avoid splashing media
• The torque limit prevents damage to the impeller, e.g. when using fragile impellers in high viscous media

Newest motor generation provides maximum power at minimum noise level
Safe start and stop of operation via slide touch panel to avoid unintended stirring

Including free Hei-Control software for dependable automation of all processes. Control up to four devices simultaneously. Also compatible with magnetic stirrers MR Hei-Connect and MR Hei-End of the Hei-PLATE series

Range of Performance

200 Ncm

Performance graph of
Hei-TORQUE Precision 200


Hei-TORQUE Precision 200 - Product Advantages


  • The electronic stirrers feature individual setting of the start operation, which prevents spills and splashing media. The speed ramps up slowly until your set rpm has been reached
  • An optional shaft guard prevents accidents
  • Non-sparking motors for additional safety
  • Important for continuous operation: the motor will be switched off if a high thermal load situation occurs to increase safety in your lab and to prevent accidents
  • Safe start and stop of operation via slide touch panel to avoid accidental start-up
  • To protect your stirrer against corrosion and short-circuits, all models comply with the protection class IP 54
  • Setting a rotation speed limitation prevents splashing media
  • Unique Quick-Chuck for immediate and convenient “one-hand” impeller changing - without tools
  • Opening the safety ring blocks accidental operation
  • An audible signal confirms a tight fit of the impeller
  • No more misplacing and searching for the chuck key! Immediate and convenient ”one-hand“ impeller changing with the Quick-Chuck - without any tools
  • RS 232 and USB interfaces allow precise documentation of process cycles
  • Free Hei-Control software for all Hei-TORQUE Precision models aids you with automating your process, and saves all data in electronic files
  • Newest motor generation for maximum power at minimum noise level below 50 dB
  • All stirrers maintain exact speed under changing loads
  • A through-shaft design allows for adjusting the impeller position to make height adjustments more convenient for you
  • Reduce your work time and achieve excellent mixing results in challenging high-viscosity media
  • A single grip allows you to re-adjust the height of your stirrer on the optional telescopic stand
  • The outstanding product design with intuitive touch-panel made of glass has been honored with the prestigious iF DESIGN AWARD in 2016
  • Reduce your maintenance costs: the sealed housing protects your stirrer from aggressive fumes, liquids and vapors to prevent internal corrosion. This results in an increased lifespan of 10 years on average while reducing maintenance and repair cost
  • The high torque level accounts for better mixing results in less time to reduce your process time and working hours significantly
  • Maintenance-free motors reduce repairs and down times significantly to ensure years of continuous operation
  • The unique impeller technology for demanding applications that mixes gels and other similar media in shorter times which reduces process cost and working hours
  • The sealed panel made of glass increases the tightness of the entire housing
  • Free software for all Hei-TORQUE Precision models avoids the need for additional investments
    • SKU
    • Commodity Codes
  • Stirring quantity max. per stirring position (H2O) (L)
  • Speed range (rpm)
    10 – 2,000
  • Viscosity max. (mPas)
  • Motor rating output (W)
  • Manufacturer
    Heidolph Instruments GmbH
  • Country of Origin