Operation Manual

8-12
IM 1F5B2-01E
■ No output is indicated but the fluid is flowing.
START
Contact Yokogawa’s
service personnel.
Is the signal current
present?
P: Are pulses present?
TP2: Is the signal
waveform normal?
YES
0mA
NO
NO
Change the
polarities.
Are the current’s
polarities correct?
Are there any
disconnected
terminals?
Is there a
broken cable?
NO
Replace the
amplifier unit.
Replace the
sensor
assembly.
Replace the
amplifier.
Replace the
cable.
Fasten the
terminal.
4mA
There is no output.
There is no output.
There is no output.
There is no output.
YES
YES
YES
NO
NO
YES
Lower the trigger
level.