How can I determine whether a liquid filler meets the required filling accuracy?
• Grade by fill volume: deviation ≤±0.5% for ≤500ml, ≤±0.3% for 500ml-5L, ≤±0.2% for >5L.
• Sample 30 consecutive bottles, weigh on a balance and convert to volume via density; discard first and last 3.
• Repeatability: standard deviation over 30 fills per nozzle ≤0.1% FS; mean difference between nozzles ≤0.2%.
• Test at rated and maximum speed to confirm no drift in flowmeter or servo volumetric dosing.
• Acceptance basis: FAT report and third-party calibration certificate; reject if filling accuracy fails.
• Sample 30 consecutive bottles, weigh on a balance and convert to volume via density; discard first and last 3.
• Repeatability: standard deviation over 30 fills per nozzle ≤0.1% FS; mean difference between nozzles ≤0.2%.
• Test at rated and maximum speed to confirm no drift in flowmeter or servo volumetric dosing.
• Acceptance basis: FAT report and third-party calibration certificate; reject if filling accuracy fails.