At Stand 5-345, Anton Paar is introducing the MCR 702 with modular TwinDrive™ technology - the first rheometer to cover all rheological applications. The rheometer has an accuracy of 1 nNm and features like the IsoLign Piezo flange, offering measuring gap control down to an unprecedented size of 10 nm. The company’s TwinDrive technology combines two powerful synchronous EC (electrically commutated) motor units in a modular setup: the upper EC motor in the rheometer is permanent; the lower EC motor can be extracted and integrated at will. Due to the EC motor's renowned dynamism and precision, users have several options of how to employ these motor units to fit their specific requirements. MCR 702 can be operated in several test modes.
In this mode, the rheometer employs both EC motors as drive units and torque transducers, optionally rotating in opposite or parallel directions. Doubled EC motors extend the scope of testing options, e.g. with optional counter-rotation for enhanced rheo-microscopy. MCR 702 TwinDrive can be operated with both motors’ maximum shear rates combined and is optionally employed for extensional rheology applications or tests with parallel rotation at different speeds. The 2EC mode also enables users to employ the motors in a more synchronized fashion, making “different demands” on each of them. Because of the EC motors’ outstanding precision, one motor is easily brought to a standstill and operated solely as a torque transducer, while the other motor is used as a drive unit only.