Manufacturer of precision electronic balances!
One: Calibration Process Optimization
Multi-Tier Weights Sectional Calibration
Utilizing certifiedE1/E2 grade weights, loaded in stages according to the scale's range (e.g., 0.01mg grade for low range verification, 1mg grade for high range verification), the calibration deviation must be controlled within ±2 times the graduation value.
Dual-Mode Calibration Mechanism
In-School: Preheat for ≥2 hours and ensure a level position before initiating the built-in program. After calibration, observe the display for stability and zero return._
External Calibration: Load external weights in ascending order from lightest to heaviest; investigate equipment malfunctions or recalibrate if out of tolerance.
Environmental Control and Equipment Protection
Humidity and Airflow Management
Work environment requires constant temperature.Maintain a temperature of 20-25°C ±0.5°C, with a constant humidity (relative humidity ≤ 60%), and place on an anti-vibration platform with a double-layer windproof cover, away from air conditioner outlets or doors and windows.
Interference Countermeasures
Use metal containers or plasticsAnti-static treatment for glassware reduces static adhesion errors.
Regular demagnetization of iron containers and keeping them away from magnetic sources such as motors and magnetic stirrers.。
III. Operational Standards and Maintenance
Key Operational Points
Sample temperatures must be balanced with the environment, and volatile substances should be used in sealed containers and10 seconds to completion of reading.
Gently place samples to avoid touching the inner wall of the windproof cover, and strictly prohibit overloading the scale (such as exceeding)5g）。
Maintenance Strategy
Clean scales and sensor areas daily, replace silica gel desiccants (color-changing) weekly.50% is失效threshold.
Post-long-term disuse, execution is required.Conduct 3 consecutive calibrations and record data to track performance degradation.
4. Fault Diagnosis and Performance Verification
Exception Handling for Stability
As the numbers continue to fluctuate, check the windscreen closure and temperature/humidity variations, and transfer to an isolation environment if necessary.。
Repetitive Error >At 0.005mg, it may indicate sensor aging, please contact the manufacturer for inspection.
Data Credibility Verification
If systematic errors (such as linear deviation greater than)A 0.003% discrepancy has been detected; a full-scale recalibration is required, along with verification of the weight traceability certificate.
By implementing the aforementioned measures, we can effectively ensure the reliability of the 1 in a million balance in research and nanomaterial analysis scenarios.。
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