Troubleshooting Pressure-Type Level Gauge Readings in Alkali Solution Tank

An alkali solution tank is equipped with a pressure-type level gauge for monitoring the liquid level. On June 9th at 14:59 hours, the gauge displayed a pressure reading of 66.543 kPa, corresponding to a tank capacity of 47.5%. However, on June 14th at 15:50 hours, the pressure reading dropped to 56.615 kPa, indicating a capacity of 40.4%. This discrepancy between pressure and capacity readings requires further investigation to determine the root cause and ensure accurate level measurements.