6-3
IM WT310E-02EN
Troubleshooting, Maintenance, and Inspection
6
6.3 Recommended Part Replacement
The life and replacement period for expendable items varies depending on the conditions of use. Refer
to the table below as a general guideline.
For part replacement and purchase, contact your nearest YOKOGAWA dealer.
Part Name Recommended Replacement Interval
Current input relay
(only for the WT310E)
A relay for switching the current input circuit. The relay’s specifications indicated below.
• Electrical life: Approximately 50,000 operations (at the rated capacity)
• Mechanical life: Approximately 1,000,000 operations
Backup battery
(lithium)
3 years
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