Instrument Verification
Regular adjustment of the force sensors in a tensile strength tester ensures that the data recorded is accurate and traceable. Load cell calibration involves applying known weights to the machine and comparing the reading to a reference standard. This process is required by ISO 17025 to maintain lab accreditation.
It prevents errors in measuring the breaking point of yarns and fabrics.
Reference Standard
Certified weights with a known mass are used to check the accuracy of the sensor. During load cell calibration, a technician applies force in increments across the full range of the instrument. The deviation from the true weight is recorded and corrected through the software.
This ensures that a five kilogram reading is truly five kilograms.
Repeatability Logic
Consistent results over multiple tests indicate that the machine is functioning correctly. A successful load cell calibration reduces the uncertainty of measurement in daily testing. This is important for fabrics that are close to the minimum strength requirements.
Reliable data prevents the accidental acceptance of weak materials.
Data Integrity
Quality reports depend on the precision of the underlying equipment. Without proper load cell calibration, the strength values for a fabric lot could be falsely high or low. This would lead to poor decisions in the supply chain and potential product failures.
The calibration certificate is a key document for any textile laboratory audit.
