Limaco ULM-31-HF, Руководство по эксплуатации и установке

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ULM.0.01.000RE_10_08_20
8. TROUBLESHOOTING
In the case of fault occurrence, personnel responsible for the level transmitter opera-
tion must take remedial measures. Operation of faulty level transmitter operation is
prohibited.
Sources of level transmitter failure can be as follows:
- measuring device failure;
- data-displaying receiving device;
- level transmitter power supply;
- process in vessel.
In the case of failure, source of failure must be identified to maximum precision.
When analog signal is used, check output signal delivery and correct generation di-
rectly at the level transmitter output, check whether the 3mA, 4mA or 21mA alarm
signals exist, check supply voltage.
The use of PC with “Configurator” software provides most comprehensive meas-
urement troubleshooting facilities.
In most cases, this allows failure cause identification and measurement problem
resolution.
Device performance diagnostics via the Bluetooth link is also available.
Level transmitter troubleshooting operations are summarized in the table below.
Failure Cause Remedy
Signal
4-20mA is not
delivered Transmitter supply voltage
is not supplied or is beyond
the permissible values (see
para. 12.1 "Specifications") Check power supply and electric
connection; correct found abnormal-
ities, if any.
4-20mA output electric
connection is broken, or too
high line resistance (see pa-
ra. 12.1 "Specifications")
Reconnect or remove increased load
from line.
Transmitter electronic unit
failure. Return device for repair.
NOTE