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Question
When voltage is applied to 61F Floatless Level Controller, it operates regardless of the actual liquid level. What is the cause of the problem and how can it be corrected?
Answer
1. Causes in the Controller
When the electrode cables are wired close to power cables or in the same duct, inductive noise from the power cables may cause the Controller to operate without any liquid.
Countermeasures:
Wire the electrode cables and power cables separately and avoid wiring closely.
Also, properly ground the common voltage.
2. Causes in the Electrodes:
Some contaminant such as trash is entangled with the electrodes and shorting the electrodes.
The electrodes are being shorted within the Electrode Holder, possibly by condensation.
Countermeasures:
Separate the electrodes and install again.
3. Causes in the Wiring
Operation is not recovering due to a leakage current caused by parasitic capacitance to ground in the cables.
The cables' surface area increases as the cable length increases and the parasitic capacitance to ground increases with more conductors, making it easier for poor recovery to occur.
Countermeasures:
Use a 61F Long-distance Controller.
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Other Level Switches FAQ
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Why do the specifications for the High-sensitivity 61F Floatless Level Controller say, "possible to use with 15 kOHM or less, however, this may cause reset failure"?
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Can two 61F Floatless Level Controllers and two Electrode Holders be used in the same tank?
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With 61F-G1 Floatless Level Controller, the water level of a water supply is above the E2' height, but the pump does not operate. What is the cause of the problem and how can it be corrected?
FAQ
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