Answer Posted / chandrasekarapandian

Step 1 --> Find total tank height (from top to bottom)
Value 1
Step 2 --> Find the empty space inside tank (from top to
just touching process fluid level) Value 2
Step 3 --> Value 1 - Value 2 == level of fluid in tank

compare the calculated value & Level transmitter value &
calibrate LT .

measure the values 1 & 2 by a standard measuring tape or a
master instrument.

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