Error messages
Error 1: Echo Bad
Very turbulent flow, or too high air content in the medium; no measurement possible.
The reason may be that the medium generally has a high proportion of air, or the propor-
tionate air
is dispensed by turbulence in the measuring system. See point 6 (Selection of the installa-
tion location).
Error 2: No Fluid
No media in measuring pipe. No measurement is possible. Fill system with medium.
The DU06 indicates no negative flow. If there is 0 flow indication while there is flow, flow
direction has to be changed in the program.
Functional check
It is the responsibility of the operator to test the function periodically and to check the de -
vice visually. periodically perform a functional test or a visual inspection.
A functional test of the contacts can be carried out in the installed or removed state, with
manual displacement of the float or by filling the container. It should be noted that no func-
tional processes are triggered by the functional test.
DU06 Instruction manual 09/2019
page 11
