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Calibration of Upgraded FMTS

T. M. Von Hoven, J. Montalvo, S. Reed, D. Francois, S. Buco and Sherman Faught


 
ABSTRACT

Four FMTs (Fineness and Maturity Tester) were upgraded at SRRC and calibrated. The calibration compares data gathered from a dozen cottons, averaged across several independent reference methods, to the FMT data. Two of the reference methods are the British Standard Methods (BSM) C used in the original calibration C and image analysis. The FMTs were calibrated at the standard airflows of 4 and 1 L/min with the sample cell volume varied to produce the desired pressure drops through the cotton. A variety of relationships exist between the FMT and reference data sets, from polynomial to linear with designated slopes and intercepts to a constant offset. This paper will demonstrate the relationships and show that the constant offset is the easiest and most direct route to accurate FMT calibration.





Reprinted from Proceedings of the 2001 Beltwide Cotton Conferences pp. 1307 - 1309
©National Cotton Council, Memphis TN

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Document last modified XXXXXX, XXX XX 2001