Single-flange differential pressure level gauge
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May I ask if a single-flange differential pressure level gauge can be used in vacuum conditions? In which operating conditions are single-flange and double-flange differential pressure level gauges not suitable? Thank you~
A single flange won’t work; the pressures on the upper and lower sides are not equal. Single flange for normal pressure and stable liquid level; double flange for pressurized or vacuum conditions.
A differential pressure level gauge is used to measure pressure differences, while a single-flange gauge is used to measure atmospheric pressure; there are two values: one is atmospheric pressure and the other is the pressure due to the liquid level
A single flange is used for storage tanks at atmospheric pressure with an opening to the atmosphere, while a double flange differential pressure design is used for sealed, pressurized storage tanks.
In a negative-pressure environment, try to avoid using differential pressure; if it must be used, contact the manufacturer to confirm the appropriate negative-pressure value
Single flanges are generally used for atmospheric-pressure tanks, while double flanges are used for closed vessels
Two single-flange units can be used to measure liquid level under vacuum conditions