Sampling and Calibration for Consistency Measurement - No Correlation Without Representation, 1997 Process Control, Electrical & Info. Conference Proceedings
Since all process consistency transmitters are “inferential” and require correlation with laboratory results, extraction, collection and processing of a representative sample of the process is essential in order to ensure proper correlation. The sample is the transmitter’s “representative” to the mill’s laboratory, and like its political counterpart is expected to represent the average composition of its constituency over a finite period of time.