Verifying a TAXTPlus load cell with a scale

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force verification

Abstract

Customers occasionally request a dynamic test method to verify their instrument performance to determine whether it generates repeatable results. Among the purposes of these requests are to meet IQ/OQ or calibration requirements, to determine whether one instrument is varying more than others, and to troubleshoot supply problems with vendors. When the forces are relatively small, for example approximately 300 grams, then the verification can be quantified using back extrusion techniques into liquid-filled containers (TTC’s TA-WE Water back extrusion fixture). The displacement profiles with these fixtures are extremely repeatable and are useful to identify and/or eliminate whether any observed variation between instruments is due to the instrument or the load cell.