Inductive flowmeter with pulsed DC excitation - has measurement tube with electrodes buried in insulating coating of tube for liquids. of any conductivity

摘要

Measurement tube has electrodes, and the pulsed magnetic flux and the liquid pass through it. Switches, amplifiers, stores and a central control device for switches and stores are connected to it. Electrodes (5) are embedded in the tube (3) insulating coating (4), and a first switch (S1) short-circuits electrode leads (a,b) connected through a second switch (S2) alternately to the first switch (S1), and at least twice during each measurement process to an active store can be connected through an amplifier (7) to a switchable store (8) which produces the useful signal.