Which method provides better accuracy? Non-linearity as the End Point Method is the relationship of the calibration curve to a specified straight line through its endpoints (i.e. Zero and Full Scale). Best Fit Straight Line (BFSL) method is the relationship of the calibration curve to a calculated straight line that minimizes the error but does not pass through the end points. BFSL method effectively cuts the end point value in half.
For a given non-linearity specification, a product specified with end point non-linearity will provide greater accuracy (i.e. lower uncertainty) than a product specified using BFSL method. The end point specification is more meaningful during re-calibration processes where the end points become Zero and Full Scale (FS) outputs.
Setra's AccuSense™ Model ASM is a high performance industrial pressure transducer specifies non-linearity as the end-point method.. This is one of many reasons why industry leaders choose the ASM for high-tech applications, laboratories, aerospace applications, vacuum systems, dynamometers, engine test cells, and more.
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