What type of pressure transmitter is used in vacuum distillation towers?

For the vacuum tower, do you need to measure the liquid level or the pressure? To measure pressure, just choose a manometer. . . Come on, come on – the beautiful ladies designed and created by my brother are here to serve you.

Gauge pressure gauge, Rosemount T series

May I ask what type of gauge is used to display negative pressure on the DCS?

Whether measured with a gauge pressure meter or a vacuum gauge, the vacuum value can be displayed on the DCS; for a gauge pressure meter, simply a calculation is required.

If the medium inside the container is relatively clean, free of crystallization and dust, making clogging of the measurement ports less likely, and if the temperature is not high, then you can choose a gauge pressure or negative pressure transmitter without any hesitation! If the medium inside the container is not clean, with crystals and dust present, it can easily block the measurement ports; in such cases, a diaphragm type should be considered ； There are also various conditions such as high temperatures; in short, the choice of pressure transmitter is closely related to the properties of the medium.

Is it a negative pressure transmitter for the negative pressure in the furnace chamber of a heating furnace?

The last edit to this post was made by 1111111 on 2018-5-12 at 21:13: To measure the pressure at the top of the vacuum distillation tower, simply use a vacuum gauge! Range: 0～-50KPa, 0～-70KPa, 0～-90KPa, 0～-110KPa —— choose whatever you want! 2. For measuring negative pressure, use a gauge pressure meter; it’s like a man strutting around entering a women’s restroom. . . Who goes to the women’s restroom just to take in the view and gets addicted to it??? Come on, tell me, and I’ll fix your eyes for free :P. 3. Although it is said that negative pressure equals absolute pressure minus the ambient atmospheric pressure, the ambient atmospheric pressure keeps changing throughout the day; the average values of atmospheric pressure in winter and summer differ by several KPa. Therefore, using an absolute pressure gauge cannot accurately measure negative pressure. . . To get accurate readings, another absolute pressure gauge is needed to measure atmospheric pressure, and a small program must also be written in the DCS to calculate the difference. It’s too complicated like that. Is he really such a man? Just to pass gas, he goes to the women’s restroom and takes a seat there. 4. Study this diagram to understand the concept of pressure – it only takes 5 minutes. . . 5 minutes will last a lifetime and keep you clear-headed

The requirements aren’t that precise; variations in atmospheric pressure can be ignored, and it’s fine to use an absolute pressure gauge. Especially in situations where certain materials volatilize and crystallize, a single-flange gauge with absolute pressure measurement can be a good choice; many of our vacuum distillation towers use this type of gauge.