Nitto Flowtech MF710, Инструменты операции, Страница: 34 / 41

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Error information
Upper limit
Lower limit
Excitation
Empty tube
Zero point
Over range
Flow measurement value over
than the upper limit value alarm
Limit alarm set value is lower than the flow
measurement, modify the upper limit alarm
settings
Flow measurement value lower
than the lower limit value alarm
Limit alarm set value is over than the flow
measurement, modify the lower limit alarm
Settings
Empty tube stage is show
zero or random data.
A)flow meter sensor is not full of medium
B) electrode surface was completely covered by
insulating layer
C) signal lines to connect the signal is incorrect or
open loop
D )measuring low conductivity medium
E )empty and full trim is not correct, or tube region %
is high sensitivity settings
Zero point value too
High on zero trim
A) on the zero trim time, the flowmeter sensor
medium in a state of non-full pipes
B )on the zero trim time, the sensor tube in a
non-static state media
C) flowmeter grounding is incorrect or unreliable
and technical requirements of re-grounding
Instant value exceeds
instrument declare value
Over the instruments max allow the value, pls
re-select the more
Large diameter of the flowmeter
Excitation circuit is not
working correctly
A) check cables terminal and electrical excitation
of the terminal connection is good or not
B )check the sensor excitation circuit don’t
existence of open or short circuit
C excitation coil temperature is too high
D excitation frequency set too high
Error
Contents Reason
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