Questions regarding differential pressure level gauges
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I would like to ask the experts here: when using a differential pressure level gauge to measure the liquid level in a tank, does the gauge indicate 100% full level in both the empty tank and the full tank conditions?
When the tank is empty, the pressures in the upper and lower level gauge tubes are equal, so the reading is naturally 0; it is only when the tank is full that the reading indicates 100% full capacity
I understand it the same way, but my manager said that this situation can occur, with both full and empty levels showing 100%. I’ve never encountered such a thing, so I was wondering if this statement is correct.
Could it be that improper use at high liquid levels has damaged the gauge, causing it to lose its elasticity? As a result, it cannot return to its normal position when the tank is empty, and it still shows a full liquid level
That’s not the right way to display it, right? If it’s a level gauge for flanges, just replace the gauge directly; in the case of threaded connections, it’s necessary to use pressure conduits to isolate the liquid
The manager said it’s due to the principle of the differential pressure level gauge, but I really can’t figure out how the principle of such a gauge could lead to this outcome
Without an isolation fluid, when the tank is full, a large amount of material enters the gauge head, which affects the readings of the gauge, right? It can’t be due to the principle of the differential pressure level gauge, right?
If both are 100, it indicates that the high and low pressure readings from the material table are the same
I think your leader might not have explained things clearly
If the liquid level is full, there must be a pressure difference; this situation should not be caused by the principle of differential pressure level gauges
It’s possible; let me ask for clarification.