YOKOGAWA VY Series User Manual

8.3 The Indication Is Zero Even It is Flowing
Is the output signal current
present?
Read Section 7.1.3
"Loop Test" and is the result OK?
No
Correct the
polarities.
Yes
Are parameters configured
correctly at operating
conditions?
Yes
Yes
Is "K34:Vortex frequency" 0Hz?
Yes
Are the power polarities
correct?
No
Are there any disconnected
power terminals?
Fasten the
power terminal.
Yes
No
Is the cable broken?
Yes
Replace the
cable.
No
No
Configure the
parameters correctly.
No
Is the low cut configured correctly?
No
No
Configure the TLA value, read Section
7.2 "Adjustment for Manual Mode".
No
Configure the density value correctly
at operating conditions.
No
Yes
Yes
Yes
No
Is there broken the sensor?
No
Yes
Yes
This case is due to coating of
vortex shedder bar.
Check the shedder bar piping inner
surfaces.
Yes
F0802.ai
Replace the AMP unit.
Contact Yokogawa
service center.
Replace the AMP unit.
Contact Yokogawa
service center.
Configure the value of
"D10:Flow lowcut"
correctly.
Is the value of
"K10:TLA" correct?
Is the value of "C26:Fixed
density" correct?
Is output indicated when
"K25:Noise balance mode"
is "MANUAL"and
"K26:Noise ration" is "0"?
Replace the sensor.
Contact Yokogawa
service center.
Replace the AMP unit.
Contact Yokogawa
service center.
Yes
Is a faulty area found
with selfdiagnosis?
No
Check for recovery measures, read
Section 6.3 "Self-Diagnostic (Error Code List)".
• If a built-in indicator is attached, check
the error code and alarm display.
• Connect by HART communication and
check self-diagnostics.
<8. Errors and Countermeasures For Display Unit>
45
IM 01F07A01-01EN
Errors and Countermeasures For Display Unit
8

YOKOGAWA VY Series Specifications

General

Brand	YOKOGAWA
Model	VY Series
Category	Measuring Instruments
Language	English