Selection of liquid level for open acid tanks
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4 new salt acid tanks 10 meters high and 2 tanks 6 meters high have been added! Is a single-flange level gauge or a radar level gauge more suitable? They are all open containers
Leaders should use radars, but I think radars can sometimes malfunction! How to convince the manager that a single-flange design is more stable!
How can it be open? Shouldn’t it absorb exhaust gases? . I also think a single-flange design is better. Do you still use on-site level gauges? . .
I agree with some of the points mentioned on the third floor; acid tanks usually require nitrogen sealing as well as exhaust gas absorption systems. However, due to the installation of nitrogen sealing and exhaust gas absorption, the pressure at the top of the tank is no longer at atmospheric pressure, and single-flange level gauges cannot measure the liquid level stably. At this time, it is recommended to use dual flanges or radar; radar is cheaper.
Salt acids are volatile; can an open container be used? Does the Environmental Protection Agency agree?
We also leave it open; there’s just a small flange on the top of the tank, right? It is recommended to use a single flange, as it provides stability and has a low failure rate. However, it’s best to ensure that the density of the acidic liquid remains constant. You can start by choosing an option that offers a low failure rate, is easy to maintain, and does not incur high costs.
The single-flange type is superior to radar in terms of ease of maintenance and lower cost. If a nitrogen seal is used, it’s also an easy solution – just install a pressure lead pipe at the top of the tank and connect it to the negative pressure side of the single-flange level gauge. An additional drain valve can be added to allow regular drainage, in case there is any liquid buildup: lol
For radar level gauges, they can only be installed from the top; to check the liquid level in person, one must go to the top of the tank. It is also necessary to determine whether the salt and acid are at room temperature or above it. In cold weather conditions, acid mist is likely to form, and this mist can attach itself to the probe of the radar level gauge, affecting the accuracy of measurements. Our company has used such gauges as well, and in cold weather we often had to go to the top of the tank to clean the probes. It is recommended to use single-flange level gauges, as they allow for local display; however, it is important to choose the right type of diaphragm – if the concentration of chlorides is high and the quality of the diaphragm material is poor, it is prone to corrosion
I personally recommend radar level gauges; they’re not as complicated as you say. If you need one, feel free to contact me at Ruida Instruments
Those who have experience using it in the field would all recommend a single-flange design. We used radar sensors before, but their measurements were often inaccurate. That said, the choice of sensor depends on whether there are holes available at the bottom of your tank; if there are only holes at the top, then you don’t need to consider a single-flange design. As mentioned by the person on floor 9, it’s important to choose the right diaphragm for a single-flange design – otherwise, it will affect its service life. If you have any questions regarding the selection, feel free to contact me privately
It is recommended to use a single-flange level transmitter! The single-flange type is more stable than radar.