Instruction Manual

<8. Maintenance>

8-7

IM 01C27H01-01EN

8.5 Troubleshooting

If any abnormality appears in the measured values,

use the troubleshooting ow chart below to isolate

and remedy the problem. Since some problems

have complex causes, these ow charts may

not identify all. If you have difculty isolating or

correcting a problem, contact Yokogawa service

personnel.

8.5.1 Basic Troubleshooting

First determine whether the process variable

is actually abnormal or a problem exists in the

measurement system.

If the problem is in the measurement system,

isolate the problem and decide what corrective

action to take.

This transmitter is equipped with a self-diagnostic

function which will be useful in troubleshooting,

and the transmitter equipped with an integral

indicator will show an alarm code as a result of self-

diagnosis.

See subsection 8.5.3 for the list of alarms.