Urgent! ! Level gauge selection and flange material
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There is a fiberglass storage tank, 10 meters high, containing 50% dilute sulfuric acid, 35% caprolactam, water, and other by-products. I chose a remote-level gauge; I opted for a radar type, and it was approved by the technical department. Why? They suggested using a double-flange level gauge, but due to the special properties of the medium, I considered using flanges lined with carbon steel or PTFE; however, this option for the flange material is not listed in the samples for double-flange gauges. I was wondering what people think in this situation – what material should be used for the flanges? Also, could slight changes in density affect the accuracy of the measurements? Thank you to all the sea friends!
It has been answered in another reply. Stainless steel can be used for the flanges, and the diaphragm in the double-flange design can be made of Hastelloy C, Monel, or tantalum (one of these three options).
Density changes will have some impact, to some extent
If the density changes significantly, the measurements will be inaccurate
Large density changes lead to inaccurate measurements; radar is still the better choice! ! 50% sulfuric acid is extremely corrosive!