Regarding double-flange liquid level measurement
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In what applications are double-flange level gauges used? Are devices with negative pressure and a sealed environment necessary for their use? How is the measurement range determined, and what factors are taken into account? I’d like to hear from those who are experts on this topic
Double flanges are always used in sealed devices; the range is calculated using the liquid pressure formula P=ρgh, but it is necessary to take into account the issue of range shift. There is a lot of information on this topic in HaiChuan
There is positive transfer and negative transfer; it depends on the actual situation.
Dual-flange differential transmitters are not suitable for negative-pressure vessels!
The manual for the double-flange differential pressure transmitter you purchased contains detailed instructions; it relies on principles taught in middle school, so take a good look at it
Double-flange level gauges are not recommended for measuring liquid levels under negative pressure