Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Chapter 10, Problem 10.31P
From a vendor catalog or online site, select a differential pressure transducer to measure between 203 Pa and 20,100 Pa across an obstruction meter. The transducer must be compatible with water. The output signal is to be measured using a data-acquisition system with 0 to 5 V, 12- bit analog-to-digital converter. Estimate the percent relative quantization error at the low and high flow rates. Based on your selection, do you recommend any signal conditioning?
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Linearity error: ±0.25% reading
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Range: 0-5 cm
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A displacement transducer has the following specifications:
Linearity error: ±0.25% reading
Drift: ±0.05%/°C reading
Sensitivity error: ±0.25% reading
Excitation: 10-25 V dc
Output: 0-5Vdc
Range: 0-5 cm
The transducer output is to be indicated on a voltmeter having a stated accuracy of 0:1% reading with a resolution of 10 μV. The system is to be used at room temperature, which can vary by 10 °C. Assume 95% confidence.
The displacement transducer above is used in measuring the displacement of a body impacted by a mass. Twenty measurements are made, which yield
Determine a best estimate for the mass displacement at 95% probability based on all available information.
Chapter 10 Solutions
Theory and Design for Mechanical Measurements
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