Meaning
Technical verification procedures evaluate the precision of secondary electricity, gas, or water meters that measure resource usage within specific departments of a larger facility. Regular sub metering calibration ensures that internal cost allocation is fair and accurate. This testing must be conducted against certified reference standards to ensure that the readings are legally and operationally defensible.
Accuracy Verification
Comparing the readings of secondary meters against a master meter reveals discrepancies that could lead to unfair billing of internal departments. When sub metering calibration is performed annually, it detects sensor drift before it affects the company’s internal financial reporting. This proactive step prevents disputes between different business units.
Cost Management
Accurate resource tracking allows managers to pinpoint which production lines consume the most energy per unit of output. If sub metering calibration is neglected, the data becomes unreliable, making it impossible to evaluate the success of energy-saving initiatives. This lack of visibility can lead to wasted capital on ineffective upgrades.
Calibration Procedure
Technicians connect a high-precision reference meter in series with the sub-meter to record and compare flow or electrical draw over a set period. If the sub metering calibration reveals an error margin greater than the specified tolerance, the meter must be adjusted or replaced. This process must be documented in a central database to maintain a complete history of equipment performance for future audits, ensuring that all subsequent data-driven decisions are based on verified facts.
