Liquid level resistive sensor

QuickField simulation example

This simulation example of a resistive liquid level sensor is prepared by Dieter Stotz as a part of the webinar Level measurement on liquids, part 1.

Problem Type
Axisymmetric problem of DC conduction.

Geometry

Given
Electrical conductivity of liquid 0.1 S/m.
Electrode potential difference ΔU = 2 V.

Task
Determine vessel potential as a function of the liquid level.

Solution
The geometry model features rotational symmetry and can be simulated as a 2D axisymmetric problem. In axisymmetric problems the axis of rotation is a horizontal one.
A series of problems with different liquid levels is generated by LabelMover.

Results
Vessel potential is a nonlinear function of the liquid level.

Current density distribution in the liquid.

• Download simulation files (files may be viewed using any QuickField Edition).