Identificación De Fallos - Endress+Hauser Liquipoint T FTW31 Guia Del Usuario

Fault Reason
Does not switch No power
Faulty signal line
Faulty electronic insert
Strong build-up
FEW54: contacts welded together
(after short-circuit)
Conductivity of liquid too low
Switches Min-/ Max- fail-safe mode set wrongly
incorrectly
Sporadic faulty Thick heavy foam,
switching very turbulent conditions,
foaming liquid
Extreme radio interference
Water in housing
FEW52: output overloaded
Endress+Hauser
Remedy
Check power
Check signal line
Exchange
Select suitable measuring range setting
(see Page 26-28)
Exchange FEW54;
put fuse in contact circuit
Select different measuring principle
Set correct mode at electronic insert
Mount device in a bypass if necessary
Screen connecting cable
Clean cover and cable gland and screw tight
Reduce load, (cable) capacitance
en - Trouble-shooting
35