Electrode Insulation Deterioration Diagnosis (Only Available For Axg, Not For Axw) - YOKOGAWA Admag TI Series User Manual

NOTE
• Be sure to use the verification function when the sensor is in the full pipe state. If the sensor is
in the empty pipe state, the function to detect adhesion may not run normally.
• When using the verification function, correctly specify the fluid status with the parameter.
• If there is a problem with the result of the verification function, refer to the Maintenance
Manual.
5.9.7 Electrode Insulation Deterioration Diagnosis (only
available for AXG, not for AXW)
The electrode insulation deterioration diagnosis function diagnoses the deterioration of insulation
with the resistance value of the electrode and displays a warning if the deterioration of insulation
is detected. It takes approximately 5 minutes to complete this diagnosis.
For details about the alarm and warning, refer to Subsection 5.6.1.
The setting can be configured with the following parameters.
Menu path
Display
F
OUNDATION
Fieldbus
Block Relative
Name Index
DTB 40
DTB 46
*1: The electrode insulation deterioration diagnosis can be configured with the following parameters. In the communication
access of F
called DD Method.
Selection
Display
Electrode insul exe
*2: From the table below, select the output required to execute the diagnosis function.
Selection
Display
Zero
Measured value Measured value
Hold
Device setup ► Diag/Service ► Diagnosis ► (see below)
Diagnostic ► DTB ► Device Diagnostics ► Diagnostics/Alerts ► Diagnostics ► (see
below)
Display
Diagnostic execute
Diagnostic output
Fieldbus, the communication access is set with the procedure of the interactive operation guide
OUNDATION
F
OUNDATION
Fieldbus
Elec Ins exe
Process value
F
OUNDATION
Fieldbus
Zero 0% output
Output of
calculated value
(Undefined)
Fixes the last
valid value
Hold
before the
diagnosis starts.
Parameter
F Fieldbus
OUNDATION
Diagnostic Exe
Diagnostic Output
Starts the electrode insulation deterioration diagnosis function (only
available for AXG, not for AXW).
Totalizer
Input 0
(Output fixed)
Totalization of
calculated value
(Undefined)
Totalizes the
last valid value
before the
diagnosis starts.
<5. Functions>
Description
Specifies the execution
of the electrode insulation
deterioration diagnostic
*1
function.
Specifies the output to execute
the electrode insulation
deterioration diagnostic
*2
function.
Description
Frequency
Pulse output
0 pps 0% output
Output of Output of
calculated value calculated value
(Undefined) (Undefined)
Fixes the last Fixes the last
valid value valid value
before the before the
diagnosis starts. diagnosis starts.
136
output
IM 01E21A02-03EN