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(*): When the Digital Transmitter is used, these errors are
generated in the Digital Transmitter, but they are handled
as if they were generated in the Process Controller .
• If the condition to generate a “Reference electrode broken
or dirty” error is met, the error is not generated immedi-
ately, but first auto-cleaning is performed up to 2 times
(the cleaning type depends upon relays configuration) .
If the Reference electrode is not OK after two auto-
cleaning, the “Reference electrode broken or dirty” error
is generated .
Note
The second auto-cleaning cycle is done only when the first
one is not enough .
Note
Both the cleaning modes (simple or advanced cleaning),
when enabled through the relay mode items, are triggered
upon the “Reference electrode broken or dirty” error .
• The “pH electrode broken or leakage” and the “Reference
electrode broken or dirty” errors are never generated if
the correspondent tests are not enabled through setup
items I .13 and I .14 . The Reference electrode test can not
be made if the Potential matching pin is not in use (see
setup item I .04) .
• The 3 .6 mA fault current is always off unless the
4-20 mA output has been configured; the 22 mA fault
current is always off unless the 0-20 mA or 4-20 mA
output has been configured .
The 3 .6 mA and the 22 mA fault current cannot be
both set to ON . If two errors are active when output is
configured as 4-20 mA (#1 or #2), and one of them is
configured for the 22 mA fault current, while the other
one is configured for the 3 .6 mA fault current, the 22 mA
current is let out to the analog output .
The fault current is automatically disabled when the
analog output is used for controlling (item O .10 equal
to “SEt”), no matter whether the fault current itself has
been configured “On” or “OFF” .
• In case of a “Temperature probe broken” error, the fault
current, if configured, is let out to both analog outputs
(unless O .20 is equal to “SEt”) . In all the other cases only
the first analog output (for pH and ORP) can let out the
fault current .
