Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Textbook Question
Chapter 9, Problem 9.10P
Select a practical fluid to use in a manometer to measure pressures up to 69 kPa of an inert gas (y = 10.4 N/m3), if water (y = 9.800 N/m3), oil (S = 0.82), and mercury (5 = 13.57) are available. Discuss the rationale for your choice(s).
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Fig shows a U-tube differential manometer
connecting two pressure pipes at A and B. Pipe A
contains a liquid of specific gravity 1.8 under the
pressure of 101 kN/m². The pipe B contains oil of
specific gravity 0.7 under the pressure of 207
kN/m2. Find the difference of pressure measured by
mercury as fluid filling U-tube in mm. The value of x
and y are 2 m and 1.1 m respectively.
Pe S,
\Mercury
The Mercury level difference (h ) in mm
An inverted differential manometer containing an oil of sp. gr. 0.9 is connected to find the difference of
pressures at two points of a pipe containing water. If the manometer reading is 40 cm, find the difference
of pressures.
[Ans. 392.4 N/m²]
(a) What are the differences among piezometer, U-tube manometer, and inverted U- tube
manometer?
Two U-tube manometers, one upright and the other inverted type, are connected across a water
line and on oil line as shown. If h,= 5 cm, what shall h2 be?
Oil (0.7)
20 сm
Oil
Water
(0.9)
12 cm
Hg
Chapter 9 Solutions
Theory and Design for Mechanical Measurements
Ch. 9 - Prob. 9.1PCh. 9 - 9.2 State the following pressures as absolute...Ch. 9 - A water-filled manometer is used to measure the...Ch. 9 - Prob. 9.4PCh. 9 - 9.5 The pressure differential across an orifice...Ch. 9 - Show that the static sensitivity of an inclined...Ch. 9 - Prob. 9.7PCh. 9 - Show that the instrument (systematic) uncertainty...Ch. 9 - A strain gauge, diaphragm pressure transducer...Ch. 9 - Select a practical fluid to use in a manometer to...
Ch. 9 - An air pressure over the 200- to 400-N/m2 range is...Ch. 9 - Calculate the design-stage uncertainty in...Ch. 9 - The pressure drop across a valve through which air...Ch. 9 - Estimate the sensitivity (pF/mm) of a capacitance...Ch. 9 - A diaphragm pressure transducer is calibrated...Ch. 9 - A diaphragm pressure transducer is coupled with a...Ch. 9 - Prob. 9.17PCh. 9 - A 2.0 mm thick circular steel diaphragm (Em = 200...Ch. 9 - Estimate the differential pressure limit for a...Ch. 9 - The pressure fluctuations in a pipe filled with...Ch. 9 - What is the sensitivity of a pitot-static tube...Ch. 9 - A pitot-static pressure probe inserted within a...Ch. 9 - A tall pitot-static tube is mounted through and...Ch. 9 - The pressure transmission line response equation...Ch. 9 - Prob. 9.26PCh. 9 - Prob. 9.28PCh. 9 - Compare the inertance of water in a 0.2-m-long...Ch. 9 - The output from a resting healthy human adult...Ch. 9 - Prob. 9.31PCh. 9 - A pressure drop of 213 Pa is measured between two...Ch. 9 - Wall pressure taps (e.g., Figs. 9.19 and 9.21) are...Ch. 9 - Prob. 9.34PCh. 9 - Prob. 9.35PCh. 9 - Determine the resolution of a manometer required...Ch. 9 - A long cylinder is placed into a wind tunnel and...Ch. 9 - Prob. 9.38PCh. 9 - Prob. 9.39PCh. 9 - What is the sound pressure in pascals if the...Ch. 9 - A 6-mm-diameter pitot-static tube is used as a...Ch. 9 - For the thermal anemometer in Figures 9.31 and...Ch. 9 - Determine the static sensitivity of the output...Ch. 9 - A laser Doppler anemometer setup in a dual-beam...Ch. 9 - A set of 5,000 measurements of velocity at a point...Ch. 9 - Aircraft airspeed is measured using a pitot...
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