Measure canal level

Yes, but negative migration is required.

Why not use an intrusive one, or a radar?

Hehe. 1. If you’re capable of sealing the air trapped inside the tube so that it doesn’t leak over time, then of course it’s possible to make such a measurement. The principle works! On the market, there are numerous level gauges that use this principle; their number is as great as that of cattle herds, sheep flocks, and pig herds. 2. Note that what I’m talking about is over a long period of time, not just 3 or 2 days, or 10 or 8 days. Over a long period, of course, the gauge shouldn’t leak air at all; otherwise it will keep losing accuracy and requiring maintenance from time to time, which would be disastrous. 3. There are also many poor-quality products on the market, in just as large numbers as cattle herds, sheep flocks, and pig herds – they simply can’t hold back air properly. :P 4. I’ve practiced the skill of holding in air, so that level gauges don’t leak air. . . If you have any problems, you can come and ask me. I can also teach you how to pay tuition fees, and even the skill of holding in gas – I’m not kidding, dog :lol.

Hehe. 1. If you’re capable of sealing the air trapped inside the tube so that it doesn’t leak over time, then of course it’s possible to make such a measurement. The principle works! On the market, there are numerous level gauges that utilize this principle; their number is as great as that of cattle herds, sheep flocks, and pig herds. 2. Note that what I’m referring to is a long-term situation, not just 2 or 3 days, or 10 or 8 days. Over a long period of time, of course, the gauge must not leak air at all; otherwise, it will keep losing accuracy and requiring maintenance from time to time, which would be disastrous. 3. There are also many poor-quality products on the market, in just as large numbers as cattle herds, sheep flocks, and pig herds – their seals aren’t tight enough and can’t hold back air. The challenge in achieving airtightness lies in ensuring that the seal is tight without sealing it off completely. Do you understand? 4. My brother has practiced the skill of holding in gas; the level gauge doesn’t leak air. . . If you have any problems, you can come and ask me. I can also teach you how to pay tuition fees, and I can pass on that skill to you. Trying to deceive me is like being a dog

This post was last edited by 1111111 on 2017-11-1 at 17:53. Hehe 1. If you have the ability to seal the air trapped inside the tube so that it doesn’t leak over time, then of course it’s possible to make such a measurement. The principle works! On the market, there are plenty of breath-holding level gauges that use this principle; their number is as large as those of cattle herds, sheep flocks, and pig herds. 2. Note that what I’m talking about is over a long period of time, not just 3 or 2 days, or 10 or 8 days. Over a long period, of course, the gauge shouldn’t leak air at all; otherwise, it will keep leaking and requiring maintenance from time to time, which would be disastrous. 3. There are also many defective products on the market, again in as great numbers as cattle herds, sheep flocks, and pig herds – their seals aren’t tight enough and can’t hold back air. The challenge in achieving airtightness is to ensure that the seal is tight without sealing it off completely. Do you understand? 4. My brother has practiced the skill of holding in gas; the level gauge doesn’t leak air. . . If you have any problems, you can come and ask me. I can also teach you how to pay tuition fees, and I can pass on that skill to you. Trying to deceive me is like being a dog /

5. Well, when it comes to measuring the level of water in channels, using differential pressure transmitters comes with the tricky problem of creating airtight seals, which makes this method less practical. As a result, submersible level gauges are almost always used for such purposes. In our large rivers, there are tens of thousands of such gauges in use right now. I basically deliver these devices to hydroelectric stations and sewage treatment plants every day. 6. Submersible level gauges have excellent leak-proof sealing features, making them both inexpensive and reliable. In terms of cost, you can find high-quality products for around 1,000 yuan. As for reliability, there are many models that can operate without any problems for 5 or even 10 years with no need for maintenance. Who would want to spend a little money to get a good product? Please help me out, dear readers!

7. In the dead of night, let’s take another look at the brief history of these instruments. We’ll talk about the pneumatic level gauges that have been in use for decades – why do they need to be pressurized with air, rather than remaining under pressure without any air? Why is that? Why don’t you understand? . . For no reason, just because it can’t hold its breath, White. :Lol, it leaks! The gas leaks out molecule by molecule, from places like the gaskets on the instruments and stuff; it slowly escapes, little by little. Get it? If anyone can’t figure this out, then think about the nitrogen and oxygen in industrial gas cylinders: even when the valves are closed and no gas is being used, why does the pressure still drop by 1 or 2 MPa after some time? That’s because, by practicing the technique mentioned by my brother, it’s possible for the instruments to retain the gas inside them. . . :No matter how good the principle of P may be, no matter how efficient it is in converting hydraulic pressure into pneumatic pressure and how environmentally friendly it is – if that principle cannot be put into practice, then it’s completely useless for measurement purposes.

My liquid level is only around 500 mm; is an immersion type suitable for use?

If you want to use a transmitter for measurement, you can only go with a single-flange type that comes with a capillary; ordinary types won’t work