10. MAINTENANCE
10.3 Troubleshooting
Although magnetic flowmeters rarely require maintenance, failures may occur when the instrument is not operated correctly. This section describes troubleshooting procedures where the cause of the breakdown is identified through receiver indication.
10.3.1 No Indication
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Is an error being displayed? Check the converter display. |
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Is an error being | YES | Examine in accordance with |
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displayed? |
| Section 6.5: Alarms. |
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NO |
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Is anything else | NO |
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being displayed? |
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YES |
| Is the fuse blown? | NO |
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| YES |
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| Does the | NO |
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| display return when the fuse | |
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| is replaced? |
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| YES |
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Does the | NO | End |
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arrow on the tube match the |
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flow direction? |
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YES |
| Perform either of the following: |
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| a. Reinstall the flowtube in |
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Check whether the flowtube |
| order to make the arrow and |
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| flow direction match. |
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is filled with fluid. |
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| b. Reverse the setting for the |
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| flow direction. |
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Is the flowtube | NO |
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full of fluid? |
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YES |
| Change the piping or the |
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Check the resistance between |
| mounting condition so that |
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| the tube fills with the fluid. |
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the flowtube’s A, B, and C |
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terminals using a multimeter. |
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Is the | NO |
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resistance 100 M or more |
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in each case? |
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YES |
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Remove the tube and |
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inspect the inside of the pipe. |
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Is foreign | NO |
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matter adhering to |
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the walls? |
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YES |
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Remove the foreign matter. | Contact a service center. |
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F1005.EPS
IM |
