This article covers the Tank Level Measurement using Manometer and find out the tank level with u-tube manometer. Calculate Empty and Full range.
Tank Level Measurement using Manometer
The DP cell is replaced by a u-tube manometer using mercury (density 13600 kg/m3), with its zero level 1 meter below the bottom of the container, calculate the full and empty readings, hempty and hfull.
Empty:
Equating pressures on the XY line:
Patm+1000×(1+½h)×9.81 = Patm+13600×h×9.81
∴1 + ½h = 13.6h
∴hempty = 0.07634 m = 76.34 mm.
Full:
Equating pressures on the XY line:
Patm+1000×(6+½h)×9.81 = Patm+13600×h×9.81
∴6 + ½h = 13.6h
∴hfull = 0.458 m. = 458 mm.