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The tuning fork level switch is a reliable and widely used liquid level measurement and control switch in industrial production, which is commonly found in the level measurement of tap water, beverage, waste water, glue, pulp, dye, acid and alkali solution and other liquids. However, if a reliable product is not operated and used properly, it will still lead to frequent failures. Therefore, it is very important to understand the common failures of tuning fork level switches and do a good job of fault prevention and treatment. The following is a discussion of the common failures of tuning fork level switches and processing.
Level measurement for pulp applications
I. Common Failures and Handling
Generally speaking, when the tuning fork level switch fails, the electronic parts, power supply, installation position, vibration fork body and so on are the most likely several parts. When there are faults in these locations, we should first check the output signals and further analyze the causes of the faults according to the different performances of the output signals, and take corresponding measures to deal with the corresponding faults. For specific methods, please refer to the general fault analysis table.
General Failure Analysis Table
Tuning Fork Level Switch Error Report on Dry Run Protection or Overflow Protection
Operating voltage too low
Check the operating voltage
Damage to electronic components
Toggle the high and low mode switches and when the meter switches as a result, the vibrating fork body may be covered with adhesions or mechanically damaged. If the switch functions incorrectly despite the correct mode of operation, send the meter for service
Toggle the high and low mode switch, if the meter does not switch thereafter, it means that the electronic components are bad, please replace the electronic components
Incorrect mounting position
Install the meter in a location in the vessel where it will not form a dead zone or bubble buildup
Attachment on the fork body
Check for adhesions on the fork body, if any are found, remove them
High and low bit mode selection error
Reset the correct high and low modes (overflow protection, dry run protection)
Indicator light appears to be blinking red
Check that the fork bodies are not damaged or heavily corroded
Damage to electronic components
Replacement of electronic components
Damage to other parts of the meter
Replacement of meter or repair
Second, on the replacement of electronic components
In the above table, when the electronic components are damaged or malfunctioning, in order to enable the meter to continue to be used normally, as a troubleshooting measure, we recommend that users replace the electronic components in a timely manner.
If the explosion-proof tuning fork level switch for solids has malfunctioned and the electronic parts need to be replaced, care should be taken to ensure that the electronic parts meet the corresponding explosion-proof requirements when replacing the electronic parts, and that the correct operating procedures are followed strictly in accordance with the instructions.
In addition, in the design, because most of the tuning fork level switches use common electronic components, so in the event of a failure, these components can be used to replace each other, so that it is convenient to promptly investigate whether the corresponding components have failed. However, when replacing the components, if the signal output of the electronic components is different, attention should be paid to make corresponding adjustments and select the electronic components that meet the requirements.
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