Why use two type of level gauges (double-flange and radio frequency admittance) at the same time?
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Why do devices such as electrodialysis tanks have two level gauges? One is of the double-flange type and the other is of the radio frequency admittance type – what are the differences in their functions?
We also have a level gauge, which sometimes gives inaccurate readings; it is necessary for on-site personnel to verify the position of the gauge. Moreover, fluctuations in the liquid level have a significant impact on the operating conditions. Later, another type of level gauge was added as a reference. You may have installed two level gauges for this very reason as well.
That’s how it’s designed these days: two different types of level gauges. Double insurance.