Level measurement

6 Continuous level measurement in liquids

1. Overview of the measuring principles

A

Segmentation

Point level

Continuous

Liquids

Vibronics Conductive Capacitance Float switch Radiometrics Hydrostatics

Radar Guided radar Ultrasonics Servo Hydrostatics (p + dp)

Capacitance Radiometrics

Bulk solids

Vibronics Capacitance Paddle Microwave barrier Radiometrics

Radar Guided radar Ultrasonics Electromechanical level system Radiometrics

Process conditions*

Pressure (bar)

400 420

Guided radar Hydrostatics (p + dp)

160 100

Radar

25

3

Capacitance

Servo

Ultrasonics

-40 -200 -80 -70 -60

150 200 350 400 450

Temperature (°C)

* Radiometry not depicted Non-contact measurement from outside and, therefore, no application limits.