Selection of liquid level gauge for negative pressure distillation tower
Thread Content
Dear masters, the negative pressure of the distillation tower is -95KPA, the temperature at the bottom of the tower is 140 degrees, the material is relatively viscous and acidic, so what type of flow meter should be used? The pressure of flow meters used today often fluctuates in a wide range.
Negative pressure is not easy to measure. If it is conductive, an electromagnetic flowmeter should be able to measure it.
Come to see my brother, the old man: lol
Dig, why are you looking outside the flow meter? ? ? ? Traffic......... Maybe I have a solution: lol
Should I choose a flow meter or a liquid level meter? There is no problem with the negative pressure diaphragm differential pressure transmitter, and there is no problem with choosing the right material for corrosive media.
The title is liquid level meter and the description is flow meter. I will select the type according to the liquid level meter. As for the liquid level gauge, the negative pressure is high and the temperature is not too high. You can use a double flange type liquid level gauge. According to the characteristics of the material, the diaphragm material should be made of acid-resistant material. Ha C alloy?
I didn't say what the measuring range is. Floats are used for smaller measuring ranges, and are commonly used in atmospheric and vacuum towers.
For radars or differential pressure whose wetted materials are special materials (HC, Ta, etc.), if possible, use electronic differential pressure level gauges to reduce errors.