Science Mathematics

# L. Auslander, R. Tolimieri's Abelian Harmonic Analysis Theta Functions and Function PDF

By L. Auslander, R. Tolimieri

ISBN-10: 3540071342

ISBN-13: 9783540071341

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Extra resources for Abelian Harmonic Analysis Theta Functions and Function Algebras on a Nilmanifold

Sample text

The K factor is the number of pulses generated by the flowmeter per unit volume of fluid that pass through the flowmeter. The meter factor is the inverse of the K factor and is often used to describe the output of the flowmeter. 73 74 Industrial Flow Measurement Figure 5-1. Squared flowmeter analog output. Figure 5-2. Digital flowmeter outputs. Chapter 5 – Totalization 75 Digital flowmeters typically have a fixed minimum, accurately measurable flow that is dependent on meter size, fluid viscosity, and operating conditions.

The relationship between repeatability and accuracy is explained by Figure 3-13. Figure 3-13. Repeatability/accuracy. Chapter 3 – Performance Measures 61 Turndown The turndown is defined herein as the ratio of the maximum flow that the flowmeter will measure within the stated accuracy, usually the full scale flow, to the minimum flow that can be measured within the stated accuracy. Each component of the system, such as the flowmeter element and the flowmeter secondary, has an associated turndown that may limit the turndown of the flowmeter system.

Squared flowmeters have approximately one-half of the deviations shown. Table 4-1. Effects of Variations in Temperature and Pressure for Linear Flowmeters These effects can also be represented graphically for linear and squared flowmeters, as illustrated in Figures 4-3 and 4-4. Liquid Temperature Compensation Requirements for accuracy that necessitate compensation for density variations caused by variations in liquid temperature are few in number; however, it should be recognized that liquid density can and does change, however slightly, as illustrated in Figure 4-5.