This blog post is our way of trying to help others save countless hours trying to diagnose common problems. We call this the Morehouse 7 Step Process For Troubleshooting A Load Cell.
Metrological Traceability: Property of a measurement result whereby the result can be related to a reference through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty.
Accuracy is influenced by both precision and bias in the measurement process. To understand accuracy, one must understand bias, systematic measurement error, random measurement error, measurement error, and precision.
In accordance with the ASTM E74-13a standard, Morehouse reports the Lower Limit Factor (LLF) which is reported on page one of the calibration certificate and not uncertainty.
It is important to remember that not all calibration laboratories provide the same type of calibration service. For load cells calibrated in compression there may be a noticeable difference in output.