TSI Instruments 9302 User manual

SINGLE-JET ATOMIZER
MODEL 9302
OWNER’S MANUAL
P/N 1990142, REVISION H
AUGUST 2015

iii
Manual History
The following is a manual history of the Model 9302 Single-Jet Atomizer
manual (part number 1990142).
Revision Date
A 1988
B May 1989
C January 1994
D May 1996
E August 1999
F September 2000
G July 2010
H August 2015

iv
Part Number
1990142 / Revision H / August 2015
Copyright
©TSI Incorporated / November 1988–2015 / All rights reserved.
Address
TSI Incorporated / 500 Cardigan Road / P.O. Box 64394 / St. Paul, MN 55164 / USA
Fax No.
[phone]
E-mail Address
[email protected]
Limitation of Warranty
and Liability
(effective February 2015)
(For country-specific terms and conditions outside of the USA, please visit www.tsi.com.)
Seller warrants the goods, excluding software, sold hereunder, under normal use and service
as described in the operator's manual, to be free from defects in workmanship and material for
12 months, or if less, the length of time specified in the operator's manual, from the date of
shipment to the customer. This warranty period is inclusive of any statutory warranty. This
limited warranty is subject to the following exclusions and exceptions:
a. Hot-wire or hot-film sensors used with research anemometers, and certain other
components when indicated in specifications, are warranted for 90 days from the date of
shipment.
b. Parts repaired or replaced as a result of repair services are warranted to be free from
defects in workmanship and material, under normal use, for 90 days from the date of
shipment.
c. Seller does not provide any warranty on finished goods manufactured by others or on
any fuses, batteries or other consumable materials. Only the original manufacturer's
warranty applies.
d. This warranty does not cover calibration requirements, and seller warrants only that the
instrument or product is properly calibrated at the time of its manufacture. Instruments
returned for calibration are not covered by this warranty;
f. This warranty is VOID if the instrument is opened by anyone other than a factory
authorized service center with the one exception where requirements set forth in the
manual allow an operator to replace consumables or perform recommended cleaning;
g. This warranty is VOID if the product has been misused, neglected, subjected to accidental
or intentional damage, or is not properly installed, maintained, or cleaned according to the
requirements of the manual. Unless specifically authorized in a separate writing by Seller,
Seller makes no warranty with respect to, and shall have no liability in connection with,
goods which are incorporated into other products or equipment, or which are modified by
any person other than Seller.
The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated
herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR
PURPOSE OR MERCHANTABILITY IS MADE. WITH RESPECT TO SELLER’S BREACH OF
THE IMPLIED WARRANTY AGAINST INFRINGEMENT, SAID WARRANTY IS LIMITED TO
CLAIMS OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY OR
INDUCED INFRINGEMENTS. BUYER’S EXCLUSIVE REMEDY SHALL BE THE RETURN OF
THE PURCHASE PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT
SELLER’S OPTION REPLACEMENT OF THE GOODS WITH NON-INFRINGING GOODS.
TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER OR
BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES, INJURIES,
OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS BASED ON
CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) SHALL BE THE
RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE PRICE, OR,
AT THE OPTION OF SELLER, THE REPAIR OR REPLACEMENT OF THE GOODS. IN THE
CASE OF SOFTWARE, SELLER WILL REPAIR OR REPLACE DEFECTIVE SOFTWARE
OR IF UNABLE TO DO SO, WILL REFUND THE PURCHASE PRICE OF THE SOFTWARE.
IN NO EVENT SHALL SELLER BE LIABLE FOR LOST PROFITS, BUSINESS
INTERRUPTION, OR ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR INCIDENTAL
DAMAGES. SELLER SHALL NOT BE RESPONSIBLE FOR INSTALLATION, DISMANTLING
OR REINSTALLATION COSTS OR CHARGES. No Action, regardless of form, may be
brought against Seller more than 12 months after a cause of action has accrued. The goods
returned under warranty to Seller's factory shall be at Buyer's risk of loss, and will be returned,
if at all, at Seller's risk of loss.
Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND
LIABILITY, which contains the complete and exclusive limited warranty of Seller. This
LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its terms
waived, except by writing signed by an Officer of Seller.
Service Policy
Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our
customers, our service policy is designed to give prompt attention to any problems. If any mal-
function is discovered, please contact your nearest sales office or representative, or call TSI’s
Customer Service at 1-800-874-2811 (USA) or [phone].

v
Contents
Manual History..........................................................................................iii
Warranty....................................................................................................iv
About This Manual ...................................................................................vi
Purpose...................................................................................................vi
Getting Help ............................................................................................vi
Submitting Comments.............................................................................vi
Sections Description................................................................................................1
Operation................................................................................................... 1
Generating Water Droplets .....................................................................2
Generating Salt or Sugar Particles..........................................................2
Dispersing Polystyrene Latex Particles...................................................2
Generating Oil Droplets...........................................................................2
Adjusting the Dilution Air........................................................................3
Maintenance and Troubleshooting.........................................................3

vi Model 9302 Single-Jet Atomizer
About This Manual
Purpose This manual describes how to use TSI's Model 9302 Atomizer.
Getting Help To obtain assistance with this product, or simply to submit suggestions,
please contact Customer Service:
TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126 USA
Fax: [phone]
Telephone: [phone] (USA) or [phone]
E-mail Address: [email protected]
Submitting Comments
TSI values your comments and suggestions on this manual. Please use
the comment sheet, on the last page of this manual, to send us your
opinion on the manual’s usability, to suggest specific improvements, or to
report any technical errors.
If the comment sheet has already been used, mail or fax your comments
on another sheet of paper to:
TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126
Fax: [phone]
E-mail address: [email protected]

1
M O D E L 9 3 0 2
Single-Jet Atomizer
Description The Model 9302 Single-Jet Atomizer is an aerosol generator specifically
designed to align and check out laser velocimeters (LV). A supply of
laboratory compressed air is connected directly to the input of its built-in
pressure regulator; the pressure gauge shows the air pressure at the
output side of the pressure regulator.
In this aerosol generator, the compressed air expands through a small
orifice (0.5 millimeter in diameter) in the form of a high-velocity jet located
in the jet-nozzle assembly. The jet creates an area of low pressure near
the orifice which, in turn, causes the liquid in the reservoir to be sucked up
into the orifice. The liquid is then broken into tiny liquid droplets and the
compressed air carries the droplets through the outlet tube.
To perform laser velocimeter checkout, direct the atomizer’s output tube at
the point of beam-crossing. Adjust the height of the output tube by
loosening the hex nut and shifting the tube up or down. The Atomizer is
designed primarily for LV system checkout and should not be used to feed
aerosols into a system under pressure.
Operation Connect the ¼-inch-dimeter (6.35 mm) compressed air hose to your
laboratory air supply. Fill the reservoir half-full with the selected liquid. Set
the pressure regulator to 25 pounds per square inch (172 kPa). The
aerosol output rate is a function of the pressure setting and the atomizer
can be operated at any pressure between 5 and 55 pounds per square
inch (34 and 379 kPa, respectively). The table below shows the
relationship between pressure, as indicated by the pressure gauge, and
output rate. Note that the atomizer outlet is open to the atmosphere.
Relationship Between Input Pressure and Aerosol Output Rate
Pressure
Aerosol Output
Psi
kPa
L/min
5
34.5
2.4
10
68.9
3.7
15
103
4.7
20
138
5.7
25
172
6.6
35
241
8.3
45
310
10.2
55
379
12.0

2 Model 9302 Single-Jet Atomizer
The Atomizer may be used to generate aerosols from different materials.
Four common applications are described in the following sections.
Generating Water Droplets
The easiest way to use the Atomizer for laser velocimeter alignment is to
fill the liquid reservoir with tap water.
Note: It is normal for some water to drip from the outlet tube; simply
collect it.
The diameter of the water droplet at the outlet depends on the pressure
setting—droplet diameter decreases with increased pressure. A setting of
25 pounds per square inch (172 kPa) will yield a number mean diameter of
approximately 1.5 micrometers.
Generating Salt or Sugar Particles
The Atomizer generates solid particles from water-soluble materials such
as salt or sugar. Fill the Atomizer’s reservoir with an aqueous solution of
the desired material. The atomizer will then generate droplets of that
solution. Smaller diameter particles of the solute will result if sufficient time
is allowed to evaporate the water from the droplets. The resultant particle
size depends on the concentration of the solute in the solution.
Dispersing Polystyrene Latex Particles
A common method of generating monodisperse aerosols is to atomize a
hydrosol that contains monodisperse particles.*For this application, add a
drop of monodisperse particles to one liter of distilled water in the reservoir.
Such a large dilution is necessary to ensure that each droplet contains only
one polystyrene latex particle. The Atomizer output must be mixed with a
large volume of dry air. When all the water from these droplets is
evaporated, polystyrene latex particles of the original diameter are
obtained.
Generating Oil Droplets
The Atomizer can also generate particles from silicon oil, dioctyl phthalate
and various vegetable oils such as corn and peanut oil.
C a u t i o n
The mist of any oil, even that of edible oil, is unhealthy; exhaust it into free
air outside the laboratory. The atomizer is not recommended for atomizing
suspensions of solid particles such as aluminum oxide, titanium oxide,
and silica; they will damage the jet-nozzle assembly.
*A wide size range of monodisperse particles is available from Dow Chemical,
1-800-258-2436.

Model 9302 Single-Jet Atomizer 3
To generate these particles, fill the Atomizer’s reservoir with the selected
oil. The diameter of the droplets depends on the setting of the pressure
regulator. For a setting of 25 pounds per square inch (172 kPa), the
number mean diameter of the particles will be approximately 0.8
micrometer.
Adjusting the Dilution Air
A design change has been made to the Model 9302 Atomizer. Previously,
the entire airflow through the Atomizer passed through an orifice nozzle
and generated particles. Thus, the full pressure drop was across the
nozzle. A rough-adjustment screw has now been added to allow some of
the pressure to bleed off as dilution air. (This is useful if the seeding
concentration is too high.) Now, a portion of the pressure drop is across the
nozzle and the rest of the pressure drop is across an orifice that supplies
dilution air to the flow and decreases the concentration of particles out of
the larger exit nozzle.
The rough adjustment screw is factory-set to provide no dilution air. To
change this setting, follow these steps:
1. Remove the plastic reservoir bowl from the bottom of the Atomizer.
2. Located along the outside diameter of the black aluminum cylinder
(attached to the plastic cap) is a no. 10-32 setscrew. Turn it
counterclockwise to open the orifice for dilution. Since slight rotation
increases the dilution air substantially, withdraw the setscrew slowly.
Several adjustments may be necessary before you achieve the correct
particle density.
Again, this adjustment is useful only if you want to decrease the
particle concentration at the exit of the nozzle. This feature may be
useful if you are looking at signals from the flow produced by the
Atomizer.
3. To shut off the dilution air flow, turn the setscrew clockwise and tighten
firmly.
Maintenance and Troubleshooting
Generally, the Atomizer requires little maintenance. However, should a
piece of dirt become trapped in the parts of the jet-nozzle assembly,
compressed air may bubble through the assembly’s long plastic tube. To
correct this minor problem, simply dismantle the assembly and carefully
clean each part.

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P/N 1990142 Rev. H ©2015 TSI Incorporated Printed in U.S.A.