4. Operating principle and system configuration
The measuring element is composed of a measuring chamber (1), measuring spring-rods (3), float (2) and a magnetic coupling system (4+5).
If a liquid medium flows through the horizontal measuring chamber (1) and in direction to the arrow, the float surrounded by the liquid is lifted until a state of balance between the lift force (A), the measuring spring-rods (3) and the float weight (GA) is reached.
The vertical position of the float in the chamber is a measure for the density of the medium and will be transmitted to the scale (6) by an encapsulated magnetic coupling system (4+5).
Density changes thus entail an adjustment of the local indication or of the electrical output signal.
The readings obtained apply solely to the medium for which the device has been calibrated or for a medium with the same viscosity.