The liquid level display in DCS shows the inverted value.
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The liquid level value is 0–2800; the actual liquid level is 1200, but the computer shows 1600. What should be done to make the computer display 1200?
Get a reliable level gauge! The program offset can also be changed
It’s really hard to explain clearly; you should consult a professional
How to convert a 4-20ma input into the corresponding 20-4ma signal
Is your liquid level the linear inverse? If so, you can also use 2800 minus the measured value in the program
What type of level gauge do you have on site? According to your description, the gauge measures the height of the empty tank, not the liquid level. It’s best to check the on-site liquid level configuration; you can also use 2800 minus the height of the empty tank in the DCS
Your level gauge is either radar or ultrasonic; just change the display on the instrument from “distance” to “level”
Subtract half the floating-point value of the current signal from 1, then multiply by the range; finally, an output floating-point variable is generated. The graphical interface connects to this new variable
It’s clearly a problem with the on-site meter settings; go and adjust them. There are specific methods for different manufacturer models