Magnetic Suspension Balance (RuboSORP MSB)

Magnetic Suspension Balance technology allows high resolution mass determination under extreme conditions. An industrial microbalance is located outside the cell. Thanks to contactless magnetic suspension coupling, mass changes within the pressurized cell can be determined. When perfroming a measurement, the sample whose mass change is being measured is attached to a permanent magnet. The actual position is detected and controlled via a high-performance PID controller. In order to establish a free levitation position for permanent magnet and measurement object, voltage is applied to a electromagnet outside of the measurement cell. This allows the sample mass to be measured contact free under extrem conditions. Load decoupling allows the object weight being measured to be substracted for taring or calibrating the measurement signal. In this case, only the permanent magnet remains in levitation position (zero-point position). When measuring point is selected, the measurement object is liftet, corresponding weight is detected by the microbalance. The measurement objects can be a crucible, containing sample material, for example being used to measure adsorption isotherms or catalytic reactions. In addition, the measurement object could also be sinker with calibrated volume for high accurate density measurement of the sinker surrounding fluid. The RuboSORP Magnetic Suspension Balance is an advanced technology for measuring the mass of two measurement objects at the same time.