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VENTILATION SMOKE TUBE KITS
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FEATURES
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 ÿÿÿÿÿ Controlled
smoke generation for determining flow and velocity of slow-moving air
currents
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ÿÿÿÿÿ Excellent
for tracing air currents in shafts, mines, tunnels, as well as heating,
ventilating
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ÿÿÿÿ and air-conditioning
systems
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ÿÿÿÿÿ Kits come
with everything needed for smoke generation
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DESCRIPTION
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MSA
Ventilation Smoke Tube Kits are for use where controlled generation of a
visible smoke is
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desired
in order to determine the velocity, direction and flow patterns of
slow-moving air currents
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in shafts, mines and tunnels. They can also be
used in commercial buildings and industrial processingÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
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plants to determine the velocity and flow patterns of
heating, ventilating and air-conditioning systems.
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Ventilation
Smoke Tube Kits consist of a hand-held rubber aspirator bulb, two rubber
plugs and
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smoke-producing tubes of either plastic
or glass design.
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Plastic Smoke Tubes
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Every
plastic tube contains two hermetically sealed glass ampoules that each contain a different chemical.
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To
use, the user slips the sheath of the tube over the exhaust fitting of the
aspirator bulb. The user then
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crushes the glass ampoules in the tube. The
vapors of the two chemicals contained in the ampoules mix and
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create smoke when the user pushes air through the
plastic tube by squeezing the rubber aspirator bulb.
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Two
domed metal screens are mounted inside each plastic tube to trap the glass
fragments from the
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broken ampoules.
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Glass Smoke Tubes
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Glass
tubes contain a chemically impregnated media that generates smoke when it is
exposed to air being
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pushed through the tube by the aspirator bulb. To
operate, the user simply snaps off and discards both of
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the scored ends of the tube. Next, the user inserts
one end of the tube into the exhaust fitting of the
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aspirator bulb. To generate smoke, the user
squeezes the aspirator bulb.
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With
either style, a single tube is intended to supply smoke for one day of normal
use. Once smoke has been
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emitted from the tube, the user should watch the
direction and speed of the smoke movement. To determine
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velocity, the travel time of the smoke should be
taken over a premeasured distance. When testing is complete,
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simply
remove the bulb from the plastic or glass tube and plug both ends of the tube
with rubber stoppers
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supplied with the kit.
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