A pitot tube flow sensor is used to measure the flow rate in a pipe, as shown in Figure Q4.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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b)
A pitot tube flow sensor is used to measure the flow rate in a pipe,
as shown in Figure Q4.
Impact Probe
P1
Direction of Flow
Static Probe
P2
Differential pressure
transducer
Figure Q4
A manometer is used to measure the differential pressure, showing
a difference in fluid level of 150 mm between the two probes.
Calculate the differential pressure if the liquid has a density of
900 kg / m3, expressing your answer in pascals and also bar.
(Gravitational acceleration, g may be taken as 9.81 m/s².)
(Question 4 continues on the next page.)
Page 5 of 14
(Question 4 continues below.)
c)
The velocity of the fluid is given by:
2(P1-P2)
V =
(m/s)
where P1 - P2 is the differential pressure, measured in Pascals.
Calculate the linear flow rate in m/s.
d)
If the diameter of the pipe is 200 mm, calculate the
i)
volumetric flow rate in m3/s
ii)
mass flow rate in kg/s
Transcribed Image Text:b) A pitot tube flow sensor is used to measure the flow rate in a pipe, as shown in Figure Q4. Impact Probe P1 Direction of Flow Static Probe P2 Differential pressure transducer Figure Q4 A manometer is used to measure the differential pressure, showing a difference in fluid level of 150 mm between the two probes. Calculate the differential pressure if the liquid has a density of 900 kg / m3, expressing your answer in pascals and also bar. (Gravitational acceleration, g may be taken as 9.81 m/s².) (Question 4 continues on the next page.) Page 5 of 14 (Question 4 continues below.) c) The velocity of the fluid is given by: 2(P1-P2) V = (m/s) where P1 - P2 is the differential pressure, measured in Pascals. Calculate the linear flow rate in m/s. d) If the diameter of the pipe is 200 mm, calculate the i) volumetric flow rate in m3/s ii) mass flow rate in kg/s
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