A Laboratory Exercise on Dilution Ratio and Water Flow of a Venturi-type Proportioner
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Hands On
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A Venturi-type proportioner (VP), trade name Hozon, can be used for an inexpensive, hands-on laboratory exercise that demonstrates the effect of water pressure on dilution ratio and water flow. Using electrical conductivity (EC) meters to determine solution concentration allows students to discover that the dilution ratio increases with water pressure, from 1:10 at 15 psi to 1:15 at 55 psi. The greater dilution at higher pressure can be explained by measuring the water flow, which is 2.3 gal/min (8.7 litersžmin-1) at 15 psi but 3.5 gal/min (13.2 litersžmin-1) at 55 psi. Experiments relating water pressure to dilution ratio provide experience in use and calibration of VPs and EC meters, as well as graph preparation and interpretation.
2014 ◽
Vol 1029
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pp. 176-181
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2015 ◽
Vol 3
(3)
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pp. 849-908
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1999 ◽
Vol 277
(6)
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pp. S67
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2013 ◽
Vol 15
(3)
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pp. 888-896
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