The LINSEIS MSB PT 1, a magnetic suspension balance, facilitates gravimetric measurements across an extensive temperature and pressure range, even in the presence of aggressive media. This magnetic suspension balance system comprises several key components, including a balance for recording measurement values, a suspension coupling responsible for supporting the sample’s weight, a position sensor to measure the levitation part’s position, and a control unit for managing the suspension coupling.

The system’s unique feature is the contactless transmission of the sample’s weight, accomplished using a levitation magnet and a holding magnet. The levitation magnet, composed of a permanent magnet, pairs with the holding magnet, which is an electromagnet suspended from the balance. The position sensor continuously reports the real-time position of the levitation magnet, while a PID controller is employed to maintain a stable levitation position using the electromagnetic force as the control input.

The magnetic coupling enables the establishment of a microbalance under standard environmental conditions. This design effectively shields the balance from extremes such as high temperatures, elevated pressures, and corrosive or aggressive media, making it suitable for a wide range of challenging measurement scenarios.