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FC-21 Flow Computer
13.3 Error & Warning Messages: (Continued)
Cause
Analog input signal of the
flow input exceeded by more
than 3%:
• Sensor overranged
• Incorrect full scale setting
of flowmeter
• Function error in
transmitter or faulty wiring
Analog input signal of the
auxiliary input exceeded by
more than 3%:
• Sensor overranged
• Incorrect full scale setting
of transmitter
• Function error in
transmitter or faulty wiring
Analog input signal of the
flow input fell below the low
scale range by more than
3% of full scale value:
• Flowmeter not set to 4-20
mA
• Function error in
transmitter or faulty wiring
Battery voltage too low
Fault in analog/digital
converter
The correct time/date is no
longer shown
Calibration constants have
been corrupted
The units setup has been
corrupted
Remedy
• Check analog
signal range
• Check the
application
conditions
• Check wiring
• Check analog
signal range
• Check the
application
conditions
• Check wiring
• Check wiring
• Check calibration of
flowmeter
• Check function of
flowmeter
• Replace Battery
• Consult Factory for
service information
• Unit may self
correct, Press
ENTER to
acknowledge &
clear alarm
• If error reasserts,
factory service is
required
• Re-enter time and
date.
• If error occurs
again contact
factory
• Report error to
factory
• Report error to
factory
Error/Warning Message
FLOW INPUT TOO HIGH
AUX INPUT TOO HIGH
FLOW INPUT TOO LOW
BATTERY LOW WARNING
A to D NOT CONVERTING
TIME CLOCK ERROR
CAL CHECKSUM ERROR
SETUP CHECKSUM ERROR
13.3.2
Self Test Alarms