§5.2 Error Code and Counter-Measures
The series ultrasonic flow meter will show Error Code in the lower right corner with a single
letter like I, R etc. on menu windows M00, M01, M02, M03, M90 and M08. When any
abnormal Error Code shows, counter-measures should be taken.
Error code
Correspondent
Message displayed
on M08
Causes
Counter-measures
R
System Normal
No error
!
Detect No Signal
(1)NoSignals detected
(2)Transducers installed improperly
(3)Too muchfouling
(4)Pipe liners are too thick.
(5)Transducer cords arenot properly
connected
(1)Relocate measuring location
(2)Clean the spot
(3)Check the cords
J
Hardware Error
Hardware problem
Contact the factory
H
PoorSig Detected
(1)Poor signal detected
(2) T ra nsduc er s
inst a lle d
improperly
(3)Too much fouling
(4)The pipe liners are too thick.
(5)Problem with transducers cords
(1)Relocate measuring place
(2)Clean the spot
(3)Check the cords
(4)Check the coupler
Q
Frequ OutputOver
The actual frequency for the
Frequency Output is out of the
range set by the user
Check the value entered at M66,
M67,M68 and M69, and try to
enter a larger value on M69
F
System RAM Error
Date Time Error
CPU or IRQ Error
ROM Parity Error
(1) Temporary problems with
RAM, RTC
(2) Permanent problems with
hardware
(1) power on again
(2) contact factory
2
3
Adjusting Gain
Instrument is in the progress of
adjusting the gain for the signal,
and the number indicates the
progressive steps
K
Empty pipe
(1) No liquid inside pipe
(2) Setup error on M29
(1) Relocate where the pipe is
full of liquid
(2) Enter 0 on M29
FDT-25 Handheld Ultrasonic Flowmeter
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