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The differential pressure gauge you bought is complete trash; it’s a common problem in this industry. Brother, I’ve already explained this before

Come and buy my brother’s vacuum level gauge – this way, the differential pressure readings will remain stable and won’t be affected by changes in vacuum level. In September, my brother sold one unit; it is used to measure the level of hot oil at 400°C under high vacuum. It was put into operation last month, and it is currently working stably – with stable performance, which gives everyone peace of mind...... :P

“The transmitter features a vacuum protection design. Hahaha, what does \"vacuum protection\" even mean? Using window screens to wipe one’s butt, showing off one’s excrement – what’s the point of that? If this differential pressure gauge is truly capable of \"protecting against vacuum,\" then why does its reading change so much as soon as a vacuum is created? For the products from that factory, when the instruments leave the factory, don’t they conduct vacuum and pressure testing? Did they really conduct tests, with the zero point shifting by so much, and they turned a blind eye to that while still sending you the goods? In my work, I often carry out vacuum and static pressure tests on differential pressure gauges. The differential pressure gauges I inspect are used in ash handling systems; when I create a vacuum, the absolute pressure usually reaches 2.5 kPa, which meets the requirements for flight use. The maximum vacuum static pressure error for the differential pressure gauges I test does not exceed 3/18750 of their full scale, that is, ≤0.016% FS, or <0.02% FS. A vacuum static pressure error of 0.02% FS is practically negligible in terms of industrial measurement standards. But for precision aerospace metrology, if the vacuum static pressure error of the differential pressure gauge reaches 0.02% FS, such a gauge would be discarded in our small factory. Otherwise, if the readings taken by the third-party secondary metering station do not meet the standards, then all our hard work will be in vain; our bonuses will be converted into fines, and our salaries will be deducted by the boss........ 5555555555555555555, damn it, bosses are really awful, right? :P

Bro, can this level gauge be used to measure tar? It is relatively viscous, and it operates under negative pressure conditions as well. The heat exchanger has no heating element, only insulation. It also cokes up frequently. . .

This post was last edited by 1111111 on 2019-11-28 at 20:51. As long as the liquid is a fluid, a vacuum level gauge can measure it. What is the size of the opening on the tank? Substitution, standing by and doing nothing, using pressure and gas collection isolation methods, as well as fluid accumulation isolation methods – this ensures that the sensor diaphragm does not come into contact with tar during measurement. That’s the trick. The 36 stratagems are all nothing but deceitful tactics; our ancestors spent their time devising cunning schemes. Good measurement is like using weapons in battle – the principles are similar; it’s all about using deception and trickery. . . :lol.

This situation is definitely a problem with the transmitter. Either there is a problem with the quality of the silicone oil used for filling, or there is an issue with the filling process.

Could we schedule a meeting in the future to learn more in detail about your measuring instruments?

Are you trying to find out about measuring vacuum liquid levels? Add me on WeChat; I’ll send you my details. 13709170262,. .

Do not use those in the form of condensers; replacing them with differential pressure transmitters with double flanges will solve the problem immediately.