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Fluid Flow<br />
Venturi Apparatus<br />
ME-8598<br />
P Bernoulli effect<br />
P Continuity equation<br />
The Venturi apparatus has a channel with<br />
varying cross-section to study the relationship<br />
between flow speed and pressure. The open<br />
design (2D cross section) allows students to<br />
see inside and directly measure all needed<br />
dimensions.<br />
There are four built-in ports to attach pressure<br />
sensors to measure the pressure at four places<br />
along the stream line simultaneously. Pressure<br />
changes caused by both fluid speed and<br />
viscosity (drag) can be measured.<br />
Designed to work with both air (see photo at<br />
right), and water (see below).<br />
Spirometer<br />
(Measures air flow)<br />
P 1 P 2 P 3 P 4<br />
P 2 and P 4 are in Venturi Constriction<br />
Quad Pressure Sensor<br />
Venturi Apparatus<br />
The Venturi Apparatus (above) is<br />
shown using a shop vacuum<br />
as the air source. A Spirometer<br />
(PS-2152) measures air flow and a<br />
Quad Pressure Sensor (PS-2164)<br />
measures air pressure in four<br />
locations. See graph at left. P 2 and<br />
P 4 are in the Venturi constrictions,<br />
and P 4 is downstream from P 1 .<br />
Note: the captured O-ring<br />
seal in the cover.<br />
The graph (above shows<br />
water pressure data at three<br />
different flow rates. The<br />
flow rate is calculated using<br />
Motion Sensor data of the<br />
water level in the graduated<br />
cylinder.<br />
The clear plastic cover can be easily removed so that students can measure<br />
the dimensions of the Venturi channel.<br />
Venturi Apparatus shown with Quad Pressure Sensor<br />
(PS-2164), Motion Sensor (PS-2103A),<br />
and the Water Reservoir (ME-8594)<br />
Includes<br />
Venturi Chamber<br />
Tubing<br />
(for both air and water)<br />
Restriction Clamps (2)<br />
Quick Connect Couplers<br />
Order Information:<br />
Venturi Apparatus ................................................. ME-8598<br />
Shown in use with:<br />
Quad Pressure Sensor ...................................... PS-2164<br />
Motion Sensor ......................................................... PS-2103A<br />
Water Reservoir ..................................................... ME-8594<br />
Spirometer Sensor ............................................... PS-2152 p. 5, 56<br />
PASPORT Interface ...................................................................................p. 4<br />
84<br />
www.pasco.com/engineering
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