Yellow phosphorus level gauge

Given the significant difference in dielectric constants, it is possible to consider using a radar level gauge

If a magnetic flip plate is to be used, it’s best to design the float and the guiding components yourself; ready-made ones cannot be used.

Can a radar level gauge measure the level of a liquid interface? How about using ultrasound for level measurement?

Designed by myself – the key issue is that it can’t solve the fundamental problem?

The last edit to this post was made by 1111111 on 2018-2-24 at 15:40. 1. If the thickness of the water seal in the yellow phosphorus tank remains relatively constant, and if it’s possible through process controls to keep this thickness within the range of 20–50 centimeters, then the midpoint value of 35 centimeters can be used for the water seal thickness, allowing for an uncontrollable error of ±15 centimeters. In this case, a high-temperature resistant sensor diaphragm for a submersible level gauge can be used without any liquid contact, which is both cost-effective and simple, thus enabling the measurement of the yellow phosphorus level. For the magnetic flap level gauge you are using, if it is of the side-mounted type, its actual accuracy in measuring the level of yellow phosphorus is more or less as mentioned above. The reason is — no one can guarantee that the thickness of the water seal in the communicating vessel remains constant and equal to that in the large tank; as a result, the liquid level of yellow phosphorus in the communicating vessel will inevitably not be the same as that in the large tank! 2. If one cannot accept the \"±15 cm uncontrollable error\" mentioned in the example above, and if one really wants to ensure that both the thickness of the water seal and the level of yellow phosphorus liquid are precisely controlled, then when money is not a concern, spending an additional 5,000 or 10,000 yuan is no big deal – it’s like wasting a little urine; there’s no need to worry about wasting water. In such a case, achieving a measurement accuracy of ±1 cm for the level gauge is not difficult at all. 3. In case you can’t find a suitable level gauge, you can come to me, Brother Pig. I’ll take care of it for you – I’ll provide you with a level gauge that won’t cause you any worries or require maintenance, so you’ll have so much free time at work that you won’t know what to do.

How can I get in touch with you? My phone number is 13655268017. The level of liquid in the tank keeps changing; it’s a tank with a capacity of around 2 cubic meters. Apart from phosphorus, there’s only water inside. When in use, water pressure is used to displace the phosphorus – when there’s less phosphorus, there’s more water; and when phosphorus is added, its presence increases, which reduces the amount of water

You also need to provide more specific parameters, such as the measurement range, accuracy requirements, tank size, temperature, pressure, explosion-proof requirements, etc.

1. The original poster got in touch with me and we talked on the phone for a short while. 2. The yellow phosphorus tank mentioned by the original poster is about 1.2 meters tall and 1.3 meters in diameter. The liquid level referred to by the original poster is the level at the interface between the yellow phosphorus and water! The tank is equipped with an inlet for yellow phosphorus, an outlet for yellow phosphorus, a water inlet, and a water outlet; the water exits through overflow. From what the original poster said, and based on their description from the 9th floor, it seems that the tank is always filled with yellow phosphorus and water, meaning there is no gas phase inside the tank? 3. If that’s the case, then the measurement conditions should be fairly good. I think this can be handled using a differential pressure gauge. 4. The difficulty in using a differential pressure gauge for this purpose lies in dealing with the solidification of yellow phosphorus or other impurities, as well as ensuring that the instrument can operate continuously without failures for a sufficient length of time. Otherwise, if the sensor diaphragm gets clogged, it will lead to inaccurate readings. It will also be necessary to stop production, disassemble the instrument, and clean it; cleaning the diaphragm not only causes the sensor’s zero point to shift but also its full-scale reading. Once the instrument is put back into use, it must be recalibrated. In my opinion, remote-operated double-flange differential pressure gauges, including those equipped with flushing rings, require a lot of maintenance when used to measure the level of yellow phosphorus, so they aren’t very practical for this purpose. 5. The measurement scheme I propose is shown in the diagram. 6. The advantage of this method is its excellent effectiveness in preventing scaling and deposit formation, as well as its ability to operate continuously without failures; it is estimated that it can be used for a year or even several years. Even in the worst-case scenario – where the pressure sensing tube becomes completely blocked, or there is a power outage that causes yellow phosphorus to solidify upon cooling – the sensor will not be damaged! In other words, it is sufficient to unscrew the tube to remove the scale or the solidified yellow phosphorus and then reheat it to melt it, after which the instrument can continue to be in use without the need for further calibration It also has its drawbacks — the sensors are of a custom design, production volumes are too low, and the cost is high. If we can’t sell it for at least 3 to 5 times the price of magnetic flip switches, then our efforts will be in vain. :Lol, 7. The OP’s question is quite typical and interesting. I’ll post a picture to share our design results; it might help inspire everyone’s thinking about measurement methods, so it could be useful.