Distinguish the measured quantity
A level sensor measures height; converting it to volume requires tank geometry or a validated tank table. A flowmeter measures flow during transfer. Coriolis measurement can provide mass flow, density and temperature; available outputs depend on the instrument. Define whether the report shows litres, kilograms or volume converted to reference conditions, consistently with the actual measurement source.
Example: volume from pulse data
With an illustrative, verified factor of 24 pulses per litre, 12,000 pulses represent 500 litres. This is an example factor and must not be copied to another instrument. Test counter overflow, starting values after interruption and pulse loss within a transaction. Preserve start and end counters with the transaction identifier; pump running time should not be reported as directly measured volume.
Stock reconciliation and scope
Reconcile tank stock changes and transfer totals using consistent units, time windows and temperature treatment. A discrepancy alone is not evidence of leakage or misconduct; examine measurement uncertainty, concurrent movements and missing data. Hazardous-area suitability and commercial measurement requirements need application-specific assessment. A software report replaces neither instrument approval nor a site-specific safety assessment.